Question

How do you solve `-71= - 5( 2r + 3) - 6`?

Answer 1

r=5

Explanation:

First of all, distribute -5 through the parenthesis

`=> -71 = -10r-15-6 => -71 = -10r-21`

Then, change `-21` side and don't forget to change its sign !

`=> -71+21 = -10r => -50 = -10r`

Then, you divide both side by `-10`

`(-50)/(-10) = (-10r)/(-10)`

So `5 = r` (or `r = 5`)