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5*x+2*x-20+8 = (6*x)/4 // - (6*x)/4
5*x+2*x-((6*x)/4)-20+8 = 0
5*x+2*x+(-3/2)*x-20+8 = 0
11/2*x-12 = 0 // + 12
11/2*x = 12 // : 11/2
x = 12/11/2
x = 24/11
x = 24/11
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