Question

Solve for r.

–7r = –8r − 20

r =

Answer 1

r = -20

Explanation:

–7r= –8r−20

Add 8r to both sides

r = -20

Answer 2

`\boxed{r = -20}`

Explanation:

`= > - 7r = - 8r - 20 \\ \\ = > - 7r + 8r = - 20 \\ \\ = > 8r - 7r = - 20 \\ \\ = > r = - 20`