Question

How do you solve `|r + 4| = 1`?

Answer 1

Solution: `r=-3 or r=-5`

Explanation:

`|r+4| =1 or r+4 =1 or r =1-4 or r=-3` OR
`|r+4| =1 or r+4 = -1 or r = -1-4 or r=-5`
Solution: `r=-3 or r=-5` [Ans]