Question

Write an expression that is equivalent to (3b+6) + 2

Answer 1

You can just add the 2, and you have a new expression:
$(3b+6)+2 = 3b+8$

That's your answer!

Answer 2

Since you're not multiplying, you can remove the parentheses.

3b+6+2

which gives you . ....

3b+8