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(1/6)*(x+3) = 3*x-(3*(3-x))-8 // - 3*x-(3*(3-x))-8
(1/6)*(x+3)+3*(3-x)-(3*x)+8 = 0
(1/6)*(x+3)+3*(3-x)-3*x+8 = 0
1/6*(x+3)+3*(3-x)-3*x+8 = 0
1/6*(x+3)+3*(3-x)-3*x+8 = 0
8-17/6*x-3*x+19/2 = 0
8-35/6*x+19/2 = 0
35/2-35/6*x = 0
35/2-35/6*x = 0
35/2-35/6*x = 0 // - 35/2
-35/6*x = -35/2 // : -35/6
x = -35/2/(-35/6)
x = 3
x = 3
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