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-81/7 = -6*x-(5*x)-10 // + -6*x-(5*x)-10
5*x-(-6*x)-81/7+10 = 0
6*x+5*x-81/7+10 = 0
11*x-11/7 = 0 // + 11/7
11*x = 11/7 // : 11
x = 11/7/11
x = 1/7
x = 1/7
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