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(1/9)*(9*x-7) = -5/8-(9/8) // + -5/8-(9/8)
(1/9)*(9*x-7)-(-5/8)+9/8 = 0
(1/9)*(9*x-7)+5/8+9/8 = 0
1/9*(9*x-7)+5/8+9/8 = 0
(1/9*8*(9*x-7))/8+5/8+9/8 = 0
1/9*8*(9*x-7)+5+9 = 0
8*x-11/9+9 = 0
8*x+70/9 = 0
(8*x+70/9)/8 = 0
(8*x+70/9)/8 = 0 // * 8
8*x+70/9 = 0
8*x+70/9 = 0 // - 70/9
8*x = -70/9 // : 8
x = -70/9/8
x = -35/36
x = -35/36
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