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15/153 = 81.6*x // - 81.6*x
15/153-(81.6*x) = 0
15/153-81.6*x = 0
5/51-81.6*x = 0 // - 5/51
-81.6*x = -5/51 // : -81.6
x = -5/51/(-81.6)
x = 0.00120146
x = 0.00120146
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