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(5/7)*x-2 = (4/5)*x-(103/35) // - (4/5)*x-(103/35)
(5/7)*x-((4/5)*x)+103/35-2 = 0
(5/7)*x+(-4/5)*x+103/35-2 = 0
33/35-3/35*x = 0 // - 33/35
-3/35*x = -33/35 // : -3/35
x = -33/35/(-3/35)
x = 11
x = 11
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