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6*x+2*x-15+14 = 5/2 // - 5/2
6*x+2*x-(5/2)-15+14 = 0
6*x+2*x-5/2-15+14 = 0
8*x-7/2 = 0 // + 7/2
8*x = 7/2 // : 8
x = 7/2/8
x = 7/16
x = 7/16
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