Question

Solve. - 1/3b = 9 A. -3 B. 3 C. - 27 D. 27

Answer 1

B=9/(-1/3)
=9•3/-1
=27/-1
=-27
C

Answer 2

$-\dfrac{1}{3}b=9\ \ \ |multiply\ both\ sides\ by\ (-3)\\\\-3\cdot\left(-\dfrac{1}{3}b\right)=-3\cdot9\\\\\huge\boxed{b=-27}\leftarrow\boxed{C}$