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(1/4)*(x+2) = 11 // - 11
(1/4)*(x+2)-11 = 0
1/4*(x+2)-11 = 0
1/4*(x+2)-11 = 0
1/4*x-21/2 = 0
1/4*x-21/2 = 0
1/4*x-21/2 = 0 // + 21/2
1/4*x = 21/2 // : 1/4
x = 21/2/1/4
x = 42
x = 42
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