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(5/15)*(x-2) = 3 // - 3
(5/15)*(x-2)-3 = 0
1/3*(x-2)-3 = 0
1/3*(x-2)-3 = 0
1/3*x-11/3 = 0
1/3*x-11/3 = 0
1/3*x-11/3 = 0 // + 11/3
1/3*x = 11/3 // : 1/3
x = 11/3/1/3
x = 11
x = 11
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