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(2/3)*x = (11/6)*x-(7/12) // - (11/6)*x-(7/12)
(2/3)*x-((11/6)*x)+7/12 = 0
(2/3)*x+(-11/6)*x+7/12 = 0
7/12-7/6*x = 0 // - 7/12
-7/6*x = -7/12 // : -7/6
x = -7/12/(-7/6)
x = 1/2
x = 1/2
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