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(2/7)*x-((6/7)*x)+6 = 62/11 // - 62/11
(2/7)*x-((6/7)*x)-(62/11)+6 = 0
(-6/7)*x+(2/7)*x-62/11+6 = 0
4/11-4/7*x = 0 // - 4/11
-4/7*x = -4/11 // : -4/7
x = -4/11/(-4/7)
x = 7/11
x = 7/11
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