7x = 3x - 12
4x=-12
x=-3
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X = 12
3x=12 3x/3=12/3 x=4
x = 4 and y = 0
15x minus 8=minus 180 3x+8=24
Multiply first equation by 1.5, giving 3x + 3y = 12, but we are told that 3x + 3y = 6. If there isn't an error in the question then 2 = 1!