Answer:
2b + 9 = ?
Explanation:
First you do commutative property, meaning you switch the numbers with ones they correspond to.
(3b-b)+(7+2)=
Then you find the sum/difference.
2b + 9 =
Since b has no number with it, just count it as a one for now. You would then do a one step equation. This would be the equation simplified.