Question

Simplify, this time in fractions.

Answer 1

\[r ^{2}/2r ^{3}\]

Answer 2

\[\frac{r^2}{2r^3}=\frac{r^2}{2r^2r}=\frac{1}{2r}\]

Answer 3

I don't understand how you got the second step.

Answer 4

\[r^3=r\times r \times r = r^2 \times r\]