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x in (-oo:+oo)
2*x-(3/5) = 1/2 // - 1/2
2*x-(3/5)-(1/2) = 0
2*x-3/5-1/2 = 0
2*x-11/10 = 0 // + 11/10
2*x = 11/10 // : 2
x = 11/10/2
x = 11/20
x = 11/20
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