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(3*x)/10 = 6/5 // - 6/5
(3*x)/10-(6/5) = 0
(3*x)/10-6/5 = 0
3/10*x-6/5 = 0 // + 6/5
3/10*x = 6/5 // : 3/10
x = 6/5/3/10
x = 4
x = 4
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