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(7*(x-5))/8 = -2*x // + -2*x
(7*(x-5))/8-(-2*x) = 0
(7*(x-5))/8+2*x = 0
(7*(x-5))/8+(2*8*x)/8 = 0
7*(x-5)+2*8*x = 0
23*x-35 = 0
(23*x-35)/8 = 0
(23*x-35)/8 = 0 // * 8
23*x-35 = 0
23*x-35 = 0 // + 35
23*x = 35 // : 23
x = 35/23
x = 35/23
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