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3/5-2*x = (1/3)*x-23/20 // - (1/3)*x-23/20
3/5-2*x-((1/3)*x)-(-23/20) = 0
(-1/3)*x-2*x+3/5+23/20 = 0
7/4-7/3*x = 0 // - 7/4
-7/3*x = -7/4 // : -7/3
x = -7/4/(-7/3)
x = 3/4
x = 3/4
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