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(1/8)*x-5 = (-3/8)*x // - (-3/8)*x
(1/8)*x-((-3/8)*x)-5 = 0
(1/8)*x+(3/8)*x-5 = 0
1/2*x-5 = 0 // + 5
1/2*x = 5 // : 1/2
x = 5/1/2
x = 10
x = 10
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