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5*x-1 = -23/8 // + -23/8
5*x-(-23/8)-1 = 0
5*x+23/8-1 = 0
5*x+15/8 = 0 // - 15/8
5*x = -15/8 // : 5
x = -15/8/5
x = -3/8
x = -3/8
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