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(2*x-10)/(-7) = 8 // - 8
(2*x-10)/(-7)-8 = 0
(2*x-10)/(-7)+(-8*(-7))/(-7) = 0
2*x-8*(-7)-10 = 0
2*x+46 = 0
(2*x+46)/(-7) = 0
(2*x+46)/(-7) = 0 // * -7
2*x+46 = 0
2*x+46 = 0 // - 46
2*x = -46 // : 2
x = -46/2
x = -23
x = -23
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