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7*x-((1/3)*x)+9 = 167/3 // - 167/3
7*x-((1/3)*x)-(167/3)+9 = 0
7*x+(-1/3)*x-167/3+9 = 0
20/3*x-140/3 = 0 // + 140/3
20/3*x = 140/3 // : 20/3
x = 140/3/20/3
x = 7
x = 7
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