slove by substitute3x-2y=122x y=1
Solve the second equation for either X or Y and substitute that expression into the first equation. Then determine both X and Y.
3x-2y=12 3x= 12+2yx = (12+2y)/3Now put this value in 2x -y =1 not sure if that is + or - 2(12+2y)/3-y = 1(24+4y)/3-y=124+4y-3y=3 24+y =3y=3-24y=-21 and then calculate x let me know if you got problems
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