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X in (-oo:+oo)
0.387 = (60*X)/(3.14*1544) // - (60*X)/(3.14*1544)
0.387-((60*X)/(3.14*1544)) = 0
0.387-0.01237583*X = 0
0.387-0.01237583*X = 0 // - 0.387
-0.01237583*X = -0.387 // : -0.01237583
X = -0.387/(-0.01237583)
X = 31.27062993
X = 31.27062993
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