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8/12 = (3*x)/100 // - (3*x)/100
8/12-((3*x)/100) = 0
(-3/100)*x+8/12 = 0
2/3-3/100*x = 0 // - 2/3
-3/100*x = -2/3 // : -3/100
x = -2/3/(-3/100)
x = 200/9
x = 200/9
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