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(3/4)*x-((1/3)*x)+(5/6)*x = x+3 // - x+3
(3/4)*x-((1/3)*x)+(5/6)*x-x-3 = 0
(3/4)*x+(-1/3)*x+(5/6)*x-x-3 = 0
1/4*x-3 = 0 // + 3
1/4*x = 3 // : 1/4
x = 3/1/4
x = 12
x = 12
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