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14/5 = (4/5)*x+2/5 // - (4/5)*x+2/5
14/5-((4/5)*x)-(2/5) = 0
(-4/5)*x+14/5-2/5 = 0
12/5-4/5*x = 0 // - 12/5
-4/5*x = -12/5 // : -4/5
x = -12/5/(-4/5)
x = 3
x = 3
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