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2*x+(6/7)*x-3 = 179/7 // - 179/7
2*x+(6/7)*x-(179/7)-3 = 0
2*x+(6/7)*x-179/7-3 = 0
20/7*x-200/7 = 0 // + 200/7
20/7*x = 200/7 // : 20/7
x = 200/7/20/7
x = 10
x = 10
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