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9-((2/3)*x) = (-1/2)*x+49/6 // - (-1/2)*x+49/6
9-((2/3)*x)-((-1/2)*x)-(49/6) = 0
(-2/3)*x+(1/2)*x-49/6+9 = 0
5/6-1/6*x = 0 // - 5/6
-1/6*x = -5/6 // : -1/6
x = -5/6/(-1/6)
x = 5
x = 5
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