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5*(x-(11/5))+(1/2)*x = 431/2 // - 431/2
5*(x-(11/5))+(1/2)*x-(431/2) = 0
5*(x-11/5)+(1/2)*x-431/2 = 0
5*(x-11/5)+x/2-431/2 = 0
(2*5*(x-11/5))/2+x/2-431/2 = 0
2*5*(x-11/5)+x-431 = 0
11*x-431-22 = 0
11*x-453 = 0
(11*x-453)/2 = 0
(11*x-453)/2 = 0 // * 2
11*x-453 = 0
11*x-453 = 0 // + 453
11*x = 453 // : 11
x = 453/11
x = 453/11
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