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(1/2)*x-((5/3)*x) = -7/3 // + -7/3
(1/2)*x-((5/3)*x)-(-7/3) = 0
(1/2)*x+(-5/3)*x+7/3 = 0
7/3-7/6*x = 0 // - 7/3
-7/6*x = -7/3 // : -7/6
x = -7/3/(-7/6)
x = 2
x = 2
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