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(1/8)*(8*x-4) = -5/8-(9/8) // + -5/8-(9/8)
(1/8)*(8*x-4)-(-5/8)+9/8 = 0
(1/8)*(8*x-4)+5/8+9/8 = 0
1/8*(8*x-4)+5/8+9/8 = 0
(1/8*8*(8*x-4))/8+5/8+9/8 = 0
1/8*8*(8*x-4)+5+9 = 0
8*x+1+9 = 0
8*x+10 = 0
(8*x+10)/8 = 0
(8*x+10)/8 = 0 // * 8
8*x+10 = 0
8*x+10 = 0 // - 10
8*x = -10 // : 8
x = -10/8
x = -5/4
x = -5/4
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