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(2/5)*x-8 = (3/11)*x+20 // - (3/11)*x+20
(2/5)*x-((3/11)*x)-20-8 = 0
(2/5)*x+(-3/11)*x-20-8 = 0
7/55*x-28 = 0 // + 28
7/55*x = 28 // : 7/55
x = 28/7/55
x = 220
x = 220
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