anonymous
  • anonymous
-4x+3=6x-7...x=-2??? Can someone c if this the right answer
Mathematics
jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this
and thousands of other questions

anonymous
  • anonymous
x=-1
anonymous
  • anonymous
You ned to get rid of the -4x first by adding 4x to both sides.
anonymous
  • anonymous
3 = 10x - 7

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
add 7 to both sides
anonymous
  • anonymous
10 = 10x
anonymous
  • anonymous
divide both sides by 10
anonymous
  • anonymous
x = 1
anonymous
  • anonymous
so i get rid of the - sign in front of the -4x and just add it to the 6x
anonymous
  • anonymous
Yes you get rid of the -4x by +4x to both sides. I get rid of the -4x because it is smaller than 6x...
anonymous
  • anonymous
ok cuz i used-4 + 6x and got -2x im lost
anonymous
  • anonymous
To get rid of let's say +5 you would -5 because that would give you 0 To get rid of -3 you + 3 because that would give you 0 To get rid of +7x you -7x because that would give you 0 To get rid of -4x you +4x because that would give you 0 Does that help?
anonymous
  • anonymous
actually since u explained it like that yes it does......sry if im being high maintenance hate not understanding my teacher sucks at his job
anonymous
  • anonymous
x/-7-9 =-3......the / means divide so i need to multiply?
anonymous
  • anonymous
OK.. You only have an x on one side so you need to get the x by itself. You always add or subtract first if needed. So you need to get rid of the -9 first
anonymous
  • anonymous
x/-7=-12?
anonymous
  • anonymous
To get rid of -9 you need to +9 -3 + 9 = 6 so x/-7 = 6 Do you understand?
anonymous
  • anonymous
not really.....
anonymous
  • anonymous
When it says to solve.. The first thing you should do is go to the side with the "x".. If both sides of the = sign have an "x" then you get rid of the smallest "x" by either adding or subtracting the "x". you do the opposite, if it is a positive "x" then you subtract. if it is a negative "x" then you add.. In this case, you only have x on one side. Do you know how to do this problem. x + 3 = 10
anonymous
  • anonymous
x=7
anonymous
  • anonymous
Without actually just figuring that out... do you know what to do algebraically?
anonymous
  • anonymous
yes subtract 3 from both sides
anonymous
  • anonymous
Good!!! Look at the problem we are doing and pretend the -7 is not there... we would have x - 9 = -3 How would you solve this?
anonymous
  • anonymous
add 9 to both sides
anonymous
  • anonymous
Good.. That is what you do first on this problem. NOw.. How would you solve 2x = 10 (algebraically)
anonymous
  • anonymous
divide 10 by 2 since 2x is multiplying u need to divide
anonymous
  • anonymous
Great.. So let's do our problem... x/-7 - 9 = -3 You add 9 to both sides x/-7 = 6 then to get rid of "divide by -7" you multiply by -7 .. put a (-7) to the left of the x and to the right of the 6 (-7) x = 6 (-7) ----- -7
anonymous
  • anonymous
the -7's cancel and you get x = -42
anonymous
  • anonymous
making sense so if x/-6=-4 can i use the the -4 or the -6? sry if stupid ?
anonymous
  • anonymous
You always go to the side with the x... don't even look at the other side. So all you see is x/-6 What would you do then?
anonymous
  • anonymous
add 6 so x=2
anonymous
  • anonymous
Read this to yourself x/-6 Did you say x divided by -6?
anonymous
  • anonymous
yes
anonymous
  • anonymous
So to get rid of divided by -6 you should multiply by -6. (-6)x -4(-6) ----- = -6 The -6's cancel and you get x = 24
anonymous
  • anonymous
wow im retarded got frazzled since there was only 2 numbers.......
anonymous
  • anonymous
Do you have another problem?
anonymous
  • anonymous
im sure i will got like 20 left for homework will u b on for a while
anonymous
  • anonymous
Sure if you want me to help you.
anonymous
  • anonymous
thank u so much for taking time and being paitent
anonymous
  • anonymous
real quick lol 3x+5=4x+16......x=3 or -11=x
anonymous
  • anonymous
x = -11 3x + 5 = 4x + 16 get rid of your smallest x (3x) by subtracting 3x from both sides 5 = x + 16 subtract 16 from both sides -11 = x x = -11
anonymous
  • anonymous
thats what i got my friend and i were in a debate
anonymous
  • anonymous
thx again
anonymous
  • anonymous
do u know how to use a algebraic calculator
anonymous
  • anonymous
Probably.. what do you need to know
anonymous
  • anonymous
trying to check my work not sure how to enter the equation my friend gave me a ti 30xa
anonymous
  • anonymous
You mean of the problem we just did? Just type 3(-11) + 5 = You should see -28 Now type 4(-11)+16 = You should see -28 That means you were correct
anonymous
  • anonymous
dont i need to put x in the equation
anonymous
  • anonymous
No ... you put in what you got for x... in the last problem it was -11
anonymous
  • anonymous
ok -2(3x+1)=3x-20......can we do together?
anonymous
  • anonymous
Yes. When you have parentheses, you need to get rid of them first... you do this by distributive method.. can you do this?
anonymous
  • anonymous
yes -6x + -2=3x-20....first step
anonymous
  • anonymous
Good... It's best not to have a + next to a - Just write -2 * 3x = -6x and -2* 1 = -2 So we write -6x - 2 = 3x - 20 NOW you have x's on both sides - so get rid of the smallest x.
anonymous
  • anonymous
so y do we change from adding to subtracting
anonymous
  • anonymous
WOW.. hard to explain... Were you ever taught that when you were given a "- 5" you could change that into a "+ a negative"
anonymous
  • anonymous
Plus a negative 2 (+ -2) is the same thing as subtracting 2 (-2)
anonymous
  • anonymous
You just never want two signs next to each other... So going back to the problem -2(3x + 1) you should think of this. -2(3x) and -2(+1) so you get -6x -2 **** THE SIGN IN FRONT OF A NUMBER ALWAYS GOES WITH THAT NUMBER... it's like it belongs to that number.
anonymous
  • anonymous
We can do it your way... here we go -6x + -2 = 3x - 20 How do we get x's on one side (get rid of the smallest "x")
anonymous
  • anonymous
ur way makes alot more sense here we go
anonymous
  • anonymous
just to make sure if i use the smaller x it would be 9x?
anonymous
  • anonymous
very good -2 = 9x - 20 NOW that you have x on one side ONLY LOOK AT THE side with the x... What do you get rid of next.
anonymous
  • anonymous
or - 3x
anonymous
  • anonymous
To get rid of the -6x you need to +6x to both sides.
anonymous
  • anonymous
add 20 or 2 to both sides get -18.....-18/9x= x=-2?
anonymous
  • anonymous
Very important you understand what I am saying. When there is only one x in your problem. You go to the side of the equal sign that has the x. YOUR EYES SHOULD NOT EVEN SEE THE OTHER SIDE OF THE = sign. In this case.. take your left hand and cover up the -2. Your eyes should ONLY see 9x - 20 and in this case you do + 20 to both sides.
anonymous
  • anonymous
okok i knew that trying to rush so im not holding u up......x=2
anonymous
  • anonymous
Yes...
anonymous
  • anonymous
thx again whats ur name im keith
anonymous
  • anonymous
Andrea
anonymous
  • anonymous
andrea i cant thk u enough
anonymous
  • anonymous
Do you have another problem? By the way, if you ever need help after tonight.. I would be glad to help you.. you can email me at amcbeth328@gmail.com
anonymous
  • anonymous
4(3x-5)=-4x+27 that equals 12x-20=-4x+27, so would it b 12x - -4x or 12x-4x?
anonymous
  • anonymous
12x - 20 = -4x + 27 You have x's on both sides of the = sign.. get rid of the smallest x by doing the opposite.
anonymous
  • anonymous
just wanted to know if next step = 8x or 16x
anonymous
  • anonymous
-4x is smaller than 12x so you get rid of the -4x by +4x to both sides 16x - 20 = 27
anonymous
  • anonymous
then add 20 to both
anonymous
  • anonymous
Yes and you won't get a nice answer
anonymous
  • anonymous
16x = 47 divide by 16 x = 2.9 or 47/16 which = 2 15/16
anonymous
  • anonymous
Any more?
anonymous
  • anonymous
7(4-x)+3=17......x=-2?
anonymous
  • anonymous
28 - 7x + 3 = 17 -7x + 31 = 17 -7x = -14 x = 2 Almost.. how do we differ
anonymous
  • anonymous
i meant x=2 my brain is fried forgot when u divide 2 negatives u get positive
anonymous
  • anonymous
Any more? I am getting tired and need to get to bed. I have to be to school early tomorrow. But if we are close, I will hang in there.
anonymous
  • anonymous
no im good thk u very much
anonymous
  • anonymous
OK Keith.. keep working hard... it will pay off for you in the long run... I could see a lot of improvement with your math tonight. Have a good week at school.
anonymous
  • anonymous
u too

Looking for something else?

Not the answer you are looking for? Search for more explanations.