Question

How do you solve `b- 7= - 15+ 2b - 2b`?

Answer 1

`b=-8`

Explanation:

Notice that `2b-2b=0`:

`b-7=-15+0`

`b-7=-15`

Add `7` to both sides of the equation:

`b-7+7=-15+7`

`b=-8`