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(4/5)/3 = x/10 // - x/10
(4/5)/3-(x/10) = 0
4/15-1/10*x = 0 // - 4/15
-1/10*x = -4/15 // : -1/10
x = -4/15/(-1/10)
x = 8/3
x = 8/3
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