math urgent!!!!!!!!

5x-4y=8

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  1. you have to isolate the x or the y. So move the 5x to the other side by subtraction,-4y=8-5x, then divide each part by -4, -4y/-4=(8/-4)-(5x/-4). Gives you y=-2+5/4x.

    Now plug that y into the original equation. 5x-4(-2+5/4x)=8...
    then once you get x plug that into the original equation and solve for y

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    posted by Molly

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