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(1/6)*x-((2/3)*x) = -5/8 // + -5/8
(1/6)*x-((2/3)*x)-(-5/8) = 0
(1/6)*x+(-2/3)*x+5/8 = 0
5/8-1/2*x = 0 // - 5/8
-1/2*x = -5/8 // : -1/2
x = -5/8/(-1/2)
x = 5/4
x = 5/4
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