Question

Divide −21abc² by 7abc.

Answer 1

\[\frac{- 21ab c^2}{7abc}\]
\[ = \frac{- 21 \times a \times b \times c \times c}{7 \times a \times b \times c}\]
\[ = - 3 a^{(1 - 1)} b^{(1 - 1)} c^{(2 - 1)} \]
\[ = - 3c\]