Question

7r - 1 = 2r + 9 last one for now thank you guys so much for helping me!

Answer 1

2

Explanation:

Answer 2

`r=2`

Explanation:

`7r - 1 = 2r + 9`

Add 1 to both sides:

`7r-1+1=2r+9+1`

`7r=2r+10`

Subtract 2r from both sides:

`7r-2r=2r+10-2r`

`5r=10`

Divide both sides by 5:

`(5r)/(5)=(10)/(5)`

`r=2`