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(1/8)*(8*x-7) = -3/4-(9/4) // + -3/4-(9/4)
(1/8)*(8*x-7)-(-3/4)+9/4 = 0
(1/8)*(8*x-7)+3/4+9/4 = 0
1/8*(8*x-7)+3/4+9/4 = 0
(1/8*4*(8*x-7))/4+3/4+9/4 = 0
1/8*4*(8*x-7)+3+9 = 0
4*x-1/2+9 = 0
4*x+17/2 = 0
(4*x+17/2)/4 = 0
(4*x+17/2)/4 = 0 // * 4
4*x+17/2 = 0
4*x+17/2 = 0 // - 17/2
4*x = -17/2 // : 4
x = -17/2/4
x = -17/8
x = -17/8
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