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(7*x)/5 = 22/15 // - 22/15
(7*x)/5-(22/15) = 0
(7*x)/5-22/15 = 0
7/5*x-22/15 = 0 // + 22/15
7/5*x = 22/15 // : 7/5
x = 22/15/7/5
x = 22/21
x = 22/21
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