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(12/10)*x-(34/10) = (5/2)*x-2 // - (5/2)*x-2
(12/10)*x-((5/2)*x)-(34/10)+2 = 0
(12/10)*x+(-5/2)*x-17/5+2 = 0
-13/10*x-7/5 = 0 // + 7/5
-13/10*x = 7/5 // : -13/10
x = 7/5/(-13/10)
x = -14/13
x = -14/13
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