Question

(r/3)(3) Please help explain how to do this

Answer 1

r

Explanation:

`( (r)/(3) )(3) \\(r)/(3) * 3`

Convert elements to fraction :

`3 = (3)/(1)`

`(r)/(3) * (3)/(1) = (3r)/(3)`

Cross-cancel common factor :3

`=(r)/(1) \\ = r`