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(3*x)/5+2/5 = 7 // - 7
(3*x)/5+2/5-7 = 0
3/5*x-33/5 = 0 // + 33/5
3/5*x = 33/5 // : 3/5
x = 33/5/3/5
x = 11
x = 11
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