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(2*x)/5 = 14/15 // - 14/15
(2*x)/5-(14/15) = 0
(2*x)/5-14/15 = 0
2/5*x-14/15 = 0 // + 14/15
2/5*x = 14/15 // : 2/5
x = 14/15/2/5
x = 7/3
x = 7/3
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