Question

3r-30=6+7r
solve for r

Answer 1

r= -9

Explanation:

`3r-30=6+7r\\Collect like terms\\3r-7r= 6+30\\-4r = 36\\Divide both sides by -4\\r = -9`

Answer 2

r = -9

Explanation:

First we want to ge the rs in the same place:

`3r-7r=6+30`

`-4r = 36`

`r=-9`