Can you please help me solve this problem using the elimination method. Also, could you explain to me how to do it? (not homework) Thank you!! :)

3x-5y=17
9x-15y=-4

Question

Can you please help me solve this problem using the elimination method. Also, could you explain to me how to do it? (not homework) Thank you!! :)

3x-5y=17
9x-15y=-4

anonymous · Answer

My teacher just gave me an example problem and that's what she gave me...idk.... forget the problem :) Can you just explain how to do these kinds of problems? Please? :)

ryan123345 · Answer

i got you

ryan123345 · Answer

ok so first off you want to look at the first equation. You want to take out the x's because first you are gonna solve for y

anonymous · Answer

correct so then x would become 12x right? because we add 3 and 9 together?

ryan123345 · Answer

noooo. to do that you have to multiply the top equation by one number so you can kill the x for example...

ryan123345 · Answer

you see how luis drew the -3 on the left of the equation? he did that because if he multiplyed the whole equation by -3 it would equal -9x+15y=-51

anonymous · Answer

sorry

ryan123345 · Answer

Now since you have a negative 9 on the top and a positive 9 on the bottom you can eliminate the x's because ones positive and ones negative and they have the same coefficient. And dont be sorry luis c:

ryan123345 · Answer

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