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(4*x)/25 = 4/15 // - 4/15
(4*x)/25-(4/15) = 0
(4*x)/25-4/15 = 0
4/25*x-4/15 = 0 // + 4/15
4/25*x = 4/15 // : 4/25
x = 4/15/4/25
x = 5/3
x = 5/3
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