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7*x-((1/3)*x)-(3/8) = 11 // - 11
7*x-((1/3)*x)-(3/8)-11 = 0
7*x+(-1/3)*x-3/8-11 = 0
20/3*x-91/8 = 0 // + 91/8
20/3*x = 91/8 // : 20/3
x = 91/8/20/3
x = 273/160
x = 273/160
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