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(3/5)*x-5 = (4/5)*x-37/5 // - (4/5)*x-37/5
(3/5)*x-((4/5)*x)-(-37/5)-5 = 0
(3/5)*x+(-4/5)*x+37/5-5 = 0
12/5-1/5*x = 0 // - 12/5
-1/5*x = -12/5 // : -1/5
x = -12/5/(-1/5)
x = 12
x = 12
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