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(7*x)/10+2/1 = 16/1 // - 16/1
(7*x)/10+2/1-(16/1) = 0
(7*x)/10-16+2 = 0
7/10*x-14 = 0 // + 14
7/10*x = 14 // : 7/10
x = 14/7/10
x = 20
x = 20
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