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(8*(x-8))/5 = -4*x // + -4*x
(8*(x-8))/5-(-4*x) = 0
(8*(x-8))/5+4*x = 0
(8*(x-8))/5+(4*5*x)/5 = 0
8*(x-8)+4*5*x = 0
28*x-64 = 0
(28*x-64)/5 = 0
(28*x-64)/5 = 0 // * 5
28*x-64 = 0
28*x-64 = 0 // + 64
28*x = 64 // : 28
x = 64/28
x = 16/7
x = 16/7
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