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