| Write down the problem, one equation over the other lining up the x's and the y's. |
2x-4y=13 4x-5y=8 |
| In this problem we will multiply the top equation by -2 so we can subtract the x's. Then solve for y. |
-2(2x-4y=13) 4x-5y=8 3y=-18 y=-6 |
| Now plug the y into one of the original equations to find x. |
2x+24=13 2x=-14 x=-7 |
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