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(3/7)*x-((4/5)*x)+10 = 2372/245 // - 2372/245
(3/7)*x-((4/5)*x)-(2372/245)+10 = 0
(3/7)*x+(-4/5)*x-2372/245+10 = 0
78/245-13/35*x = 0 // - 78/245
-13/35*x = -78/245 // : -13/35
x = -78/245/(-13/35)
x = 6/7
x = 6/7
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