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(2*(x+1))/3 = 3*x-3 // - 3*x-3
(2*(x+1))/3-(3*x)+3 = 0
(2*(x+1))/3-3*x+3 = 0
(2*(x+1))/3+(-3*3*x)/3+(3^2)/3 = 0
2*(x+1)-3*3*x+9 = 0
2-7*x+9 = 0
11-7*x = 0
(11-7*x)/3 = 0
(11-7*x)/3 = 0 // * 3
11-7*x = 0
11-7*x = 0 // - 11
-7*x = -11 // : -7
x = -11/(-7)
x = 11/7
x = 11/7
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