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B=\frac{-\frac{9}{3}+\frac{1}{3}}{1+\frac{1}{3}}
Convert -3 to fraction -\frac{9}{3}.
B=\frac{\frac{-9+1}{3}}{1+\frac{1}{3}}
Since -\frac{9}{3} and \frac{1}{3} have the same denominator, add them by adding their numerators.
B=\frac{-\frac{8}{3}}{1+\frac{1}{3}}
Add -9 and 1 to get -8.
B=\frac{-\frac{8}{3}}{\frac{3}{3}+\frac{1}{3}}
Convert 1 to fraction \frac{3}{3}.
B=\frac{-\frac{8}{3}}{\frac{3+1}{3}}
Since \frac{3}{3} and \frac{1}{3} have the same denominator, add them by adding their numerators.
B=\frac{-\frac{8}{3}}{\frac{4}{3}}
Add 3 and 1 to get 4.
B=-\frac{8}{3}\times \frac{3}{4}
Divide -\frac{8}{3} by \frac{4}{3} by multiplying -\frac{8}{3} by the reciprocal of \frac{4}{3}.
B=\frac{-8\times 3}{3\times 4}
Multiply -\frac{8}{3} times \frac{3}{4} by multiplying numerator times numerator and denominator times denominator.
B=\frac{-8}{4}
Cancel out 3 in both numerator and denominator.
B=-2
Divide -8 by 4 to get -2.