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(1/3)*(x-5)+(5/6)*(x+2) = x+3 // - x+3
(1/3)*(x-5)+(5/6)*(x+2)-x-3 = 0
1/3*(x-5)+5/6*(x+2)-x-3 = 0
1/3*(x-5)+5/6*(x+2)-x-3 = 0
7/6*x-x-3 = 0
1/6*x-3 = 0
1/6*x-3 = 0
1/6*x-3 = 0 // + 3
1/6*x = 3 // : 1/6
x = 3/1/6
x = 18
x = 18
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