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(2*x+4*x)/22 = 72 // - 72
(2*x+4*x)/22-72 = 0
(6*x)/22-72 = 0
(6*x)/22+(-72*22)/22 = 0
6*x-72*22 = 0
6*x-1584 = 0
(6*x-1584)/22 = 0
(6*x-1584)/22 = 0 // * 22
6*x-1584 = 0
6*x-1584 = 0 // + 1584
6*x = 1584 // : 6
x = 1584/6
x = 264
x = 264
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