jakyfraze
  • jakyfraze
can someone please help me and show me how to do this please ;"( Simplify and solve this equation: 4m + 9 + 5m – 12 = 42. A. m = 5 B. m = 4 C. m = –5 D. m = -4
Mathematics
katieb
  • katieb
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
So the way it works is you have to plug it in. so start with 4. 16+9+20-12 that is 45-12 which is 33. So no. 5 would be 20 + 9 + 25 - 12 which is 42! So the answer is 5. Just remember, plug in the numbers, and everything would be great! Lmk if you need anything else
jakyfraze
  • jakyfraze
were did you get this from 4. 16+9+20-12?
jakyfraze
  • jakyfraze
what happened to this 4m + 9 + 5m – 12 = 42.

Looking for something else?

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

More answers

anonymous
  • anonymous
so it is 4m so that is 4x4 which is 16. And 5m would be 5 x 4 which is 20
anonymous
  • anonymous
I just plugged in the #s. Sorry!
anonymous
  • anonymous
4m + 9 + 5m – 12 = 42. that is the base. so 4m = 4 x the #, so you replace 4m with the answer
jakyfraze
  • jakyfraze
I'm really sorry. i don't understand :(.
anonymous
  • anonymous
Ok, so 4m is 4 times of the variable. So m is the variable. So what you are doing is that you replace the variable with the number, so 4m would be 4 x 4 if you are replacing m with 4. So m would be 5 if you use 5 as the variable. And hey, it is fine!
jakyfraze
  • jakyfraze
thank you :'). so how is 4m 4x4 but 5m is not 5x5
anonymous
  • anonymous
I am using 4m as an example from the problem! so up there, there is 4m and 5m. So if m=5 then there would be 4 x 5 and 5 x 5 because it is 4m/5m. The 4/5m means that you are multiplying the number times the variable
anonymous
  • anonymous
Do you understand or no? Please let me know!
jakyfraze
  • jakyfraze
so what do you mean by 4 x 5 and 5 x 5?
jakyfraze
  • jakyfraze
im jus trying to understand
anonymous
  • anonymous
so it is 4m which is 4 times the variable. the letter is the variable. So 4x5 is 4m and m=4 so when a variable is connected to the #, that means to multiply it. So when you do 4m it = 4 x4. and so up there, 5m would be 5 times the variable. And since m is the variable, m would = one of the 4 answer choices. Just plug them in, and it would be fine. so 4m = 4 x the variable
anonymous
  • anonymous
LMK if you need more help!
jakyfraze
  • jakyfraze
I'm really sorry but i really don't understand at all
anonymous
  • anonymous
Really it is no problem. So tell me, what is it that you don't understand? Is it how the 4m = 4 x the #, or is it the m = a # or? I need to know so I can help!
jakyfraze
  • jakyfraze
so it is 4m which is 4 times the variable. the letter is the variable. So 4x5 is 4m and m=4 so when a variable is connected to the #, that means to multiply it. So when you do 4m it = 4 x4. and so up there, 5m would be 5 times the variable. And since m is the variable, m would = one of the 4 answer choices. Just plug them in, and it would be fine. so 4m = 4 x the variable
jakyfraze
  • jakyfraze
what i don't understand is the whole entire question and the m thing you talking about. please don't think I'm trolling you or being funny.
anonymous
  • anonymous
@jakyfraze what you said above was absolutely correct! so normally x is the normal variable, but in this case, they are using m. so you do m x the # and then add and subtract the numbers above in the correct order (PEMDAS) and then you get an answer, and if it matches, it is right!
anonymous
  • anonymous
And I don't think you are trolling don't worry!
jakyfraze
  • jakyfraze
oh :') thank you. can you please do a step by step on how you got the answer please. i really want to learn this. thank you so much trying to explain it to me :)
anonymous
  • anonymous
Ok! So step one find the variables and such. So that in this case is m. And up there, the answer choices are 4, 5, -4, -5. so what you have to do is replace m with one of the answer choices. So in this case, it is 4m and 5m, so you replace them with 4 x 4,5,-4, or -5. Only one though. So let's use 4. 4m + 9 + 5m – 12 = 42. So replace 4m with 4 x 4 and 5m with 5 x 5. So once you have that, you just solve it. so 16+9+20-12. and that is 33. so let's redo it with 5. 20+9+25-12, and that is 42!
anonymous
  • anonymous
Are you still there?
anonymous
  • anonymous
I guess not! I hope you understand! Have a great day and good luck!
jakyfraze
  • jakyfraze
@WoahItsJian sorry i feel asleep :(
jakyfraze
  • jakyfraze
@WoahItsJian 5 x 5= 25. you said 20.
jakyfraze
  • jakyfraze
@Mehek14 are you good at math?
Mehek14
  • Mehek14
add like terms
jakyfraze
  • jakyfraze
can you explain to me how you would solve this or how to solve it
Mehek14
  • Mehek14
4m + 5m = 9m 9 - 12 = -3 9m - 3 = 42 add 3 9m = 45 divide by 9 m = 5
jakyfraze
  • jakyfraze
@Mehek14 why add three? are suppose to only add the middle to the right side?
Mehek14
  • Mehek14
you want to get m by itself so you move everything to the other side when you move something, you do the opposite operation -3 becomes +3
jakyfraze
  • jakyfraze
so you only do this when the number is -3?
jakyfraze
  • jakyfraze
@Mehek14 right?
Mehek14
  • Mehek14
no to anything moving to the other side
jakyfraze
  • jakyfraze
what moves to the right side?
Mehek14
  • Mehek14
like how you had 9m = 45 to get 9 to the other side, you had to do the opposite 9 was being multiplied to m to move it to the other side, i divided 9
jakyfraze
  • jakyfraze
@Mehek14 can you give me a problem to solve please? i want to see if i got it
Mehek14
  • Mehek14
ok

Looking for something else?

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