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(1/7)*(x+2) = 2 // - 2
(1/7)*(x+2)-2 = 0
1/7*(x+2)-2 = 0
1/7*(x+2)-2 = 0
1/7*x-12/7 = 0
1/7*x-12/7 = 0
1/7*x-12/7 = 0 // + 12/7
1/7*x = 12/7 // : 1/7
x = 12/7/1/7
x = 12
x = 12
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