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3*x-(5/2) = -45 // + 45
3*x-(5/2)+45 = 0
3*x-5/2+45 = 0
3*x+85/2 = 0 // - 85/2
3*x = -85/2 // : 3
x = -85/2/3
x = -85/6
x = -85/6
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