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5*x-((4/4)*x)+7 = 13/11 // - 13/11
5*x-((4/4)*x)-(13/11)+7 = 0
5*x-x-13/11+7 = 0
4*x+64/11 = 0 // - 64/11
4*x = -64/11 // : 4
x = -64/11/4
x = -16/11
x = -16/11
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