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8/5 = (12/5)*x+3 // - (12/5)*x+3
8/5-((12/5)*x)-3 = 0
(-12/5)*x+8/5-3 = 0
-12/5*x-7/5 = 0 // + 7/5
-12/5*x = 7/5 // : -12/5
x = 7/5/(-12/5)
x = -7/12
x = -7/12
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