Here's the question you clicked on:
katie2212
Use elimination to solve the system. What is the value of x? 4x + 7y = -14 and 8x + 5y = 8
Hint: Multiply everything in the first equation by -2 to go from 4x + 7y = -14 to -8x - 14y = 28
So you now have the two equations -8x - 14y = 28 8x + 5y = 8
That's solving for x first and then plugging it back to get y. I thought that the OP wanted to do it from that one step.
you can go a number of ways, you can multiply the top equation by 5 and the bottom equation by -7, then add
im just getting more confused
I believe the answer is -14.
these are the options. 3.5 -1.5 8 -4
Oh then i bet the answer is -5
Do you see how I went from 4x + 7y = -14 to -8x - 14y = 28
please don't give away the (incorrect) answer
sorry, if you would just give her the right answer, i would be able to go on with my day. As would she
I'm providing hints and trying to walk her through it (without giving it all away)
No matter how many hints your provide she doesn't care. she just wants the answer
well that's not what this site is for, I'm sry
if you keep this behavior up jefferyflow123go you will be reported (and possibly suspended/banned)
its hard for me too understand..im trying. i learn better in a class room thats why i am having trouble with my online class
its ok, you don't have to understand everything at once katie2212
but i have to understand if i want to finishe this exam.
Sorry for hekping. My mom always taught me to hekp and have pride in my work, so trying to be of assistance. I didn;t realize that you can be the only genious here. If you were that smart you'd know that she doesn't understand your hints and just wants the answer.
that's not helping though, you may think it is...but it's not
if you want, you can provide the steps so she can learn from them
okay will you guys please stop arguing and just help me!
ok I'll give steps on this one and hopefully it will be enough to answer similar ones, sound good?
IS your refrigderator running ? IF SO GO CATCH IT
My momma once told me, a fast runna' is the best runnna'
jeffery if youre not going to help please get out.
BUT IM JUST TRYNA HELP YOU. ILL CATCH YOUR FRIDGE FR YOU.
What did the bison say to his son when he left for college? Bi-son
4x + 7y = -14 ... Start with the first equation -2(4x + 7y) = -2*(-14) ... Multiply both sides by -2 -8x - 14y = 28 ... Distribute and multiply --------------------- So 4x + 7y = -14 is the same as -8x - 14y = 28 --------------------- This means that the system 4x + 7y = -14 8x + 5y = 8 becomes -8x - 14y = 28 8x + 5y = 8 Now add the two equations: -8x - 14y = 28 8x + 5y = 8 -------------- 0x - 9y = 36 which means that -9y = 36 Solve for y to get -9y = 36 y = 36/(-9) y = -4 Now that we know that y = -4, we can use this to find x. Pick on any equation, plug in y = -4 and solve for x 4x + 7y = -14 4x + 7(-4) = -14 4x - 28 = -14 4x = -14 + 28 4x = 14 x = 14/4 x = 7/2 x = 3.5 So the value of x is x = 3.5
yanno wizard like Harry Potter
The idea here is to get the x coefficients equal and opposite. Then you add the equations. Doing so will cancel out the x terms so you can solve for y
then you use that value of y to find x
you've been reported jefferyflow123go, have a nice day
you too good sir(:
good luck with that one, I don't spam and harass others so your claim will be without merit