Question

5 - (r+3) = -1 + 2 (r-3) ?

Answer 1

`r=3`

Explanation:

Firstly, we should know that we have to isolate r.
We should try to combine like terms by adding one on both sides on both sides in order to get: `6-(r+3)=2(r-3)`.
Then we distribute the 2 in the (r-3) to get `2r-6`.
Afterwards, we get `6-(r+3)=2r-6`.

We then add both sides by -(r+3) to get `6=3r-3`.
Add both sides by 3 `9=3r`. Lastly divide both sides by 3 to get...`r=3`.