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(8*x+4)/(-6) = -10 // + 10
(8*x+4)/(-6)+10 = 0
(8*x+4)/(-6)+(-6*10)/(-6) = 0
8*x-6*10+4 = 0
8*x-56 = 0
(8*x-56)/(-6) = 0
(8*x-56)/(-6) = 0 // * -6
8*x-56 = 0
8*x-56 = 0 // + 56
8*x = 56 // : 8
x = 56/8
x = 7
x = 7
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