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(7/8)*(16*x+32) = -7*x-14 // + -7*x-14
(7/8)*(16*x+32)-(-7*x)+14 = 0
(7/8)*(16*x+32)+7*x+14 = 0
7/8*(16*x+32)+7*x+14 = 0
7/8*(16*x+32)+7*x+14 = 0
21*x+14+28 = 0
21*x+42 = 0
21*x+42 = 0
21*x+42 = 0 // - 42
21*x = -42 // : 21
x = -42/21
x = -2
x = -2
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