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