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4*x-(3*x)-(1/5) = 1/30 // - 1/30
4*x-(3*x)-(1/5)-(1/30) = 0
4*x-3*x-1/5-1/30 = 0
x-7/30 = 0 // + 7/30
x = 7/30
x = 7/30
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