Solve for B
B = \frac{21}{5} = 4\frac{1}{5} = 4.2
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-\frac{5}{3}B=3-10
Combine -2B and \frac{1}{3}B to get -\frac{5}{3}B.
-\frac{5}{3}B=-7
Subtract 10 from 3 to get -7.
B=-7\left(-\frac{3}{5}\right)
Multiply both sides by -\frac{3}{5}, the reciprocal of -\frac{5}{3}.
B=\frac{-7\left(-3\right)}{5}
Express -7\left(-\frac{3}{5}\right) as a single fraction.
B=\frac{21}{5}
Multiply -7 and -3 to get 21.
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