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3*(x-3) = 180/12 // - 180/12
3*(x-3)-(180/12) = 0
3*(x-3)-15 = 0
3*(x-3)-15 = 0
3*x-24 = 0
3*x-24 = 0
3*x-24 = 0 // + 24
3*x = 24 // : 3
x = 24/3
x = 8
x = 8
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