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b in (-oo:+oo)
239.4133 = 16*(1/3)*b // - 16*(1/3)*b
239.4133-(16*(1/3)*b) = 0
(-16/3)*b+239.4133 = 0
239.4133-16/3*b = 0 // - 239.4133
-16/3*b = -239.4133 // : -16/3
b = -239.4133/(-16/3)
b = 44.88999378
b = 44.88999378
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