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(2/5)*(3*x-6) = 10 // - 10
(2/5)*(3*x-6)-10 = 0
2/5*(3*x-6)-10 = 0
2/5*(3*x-6)-10 = 0
6/5*x-62/5 = 0
6/5*x-62/5 = 0
6/5*x-62/5 = 0 // + 62/5
6/5*x = 62/5 // : 6/5
x = 62/5/6/5
x = 31/3
x = 31/3
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