3 years ago

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

Mathematics

2 answers:

Alexxx [7]3 years ago

7 0

B=9/(-1/3)
=9•3/-1
=27/-1
=-27
C

ruslelena [56]3 years ago

3 0

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

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