How to identify and combine like terms?

Answer 1

sample problem

9b + 3a - a + 6+ 2b + 4

terms would be each number or number plus a variable separated by an operation symbol (+ or -)

like terms would be 9b and 2b, 3a and -a, and 6 and 4

simply add 9b + 2b (which is 11b)

3a-a (which is 2a)

and 6 + 4 (which is 10)

your answer would then be 11b + 2a + 10

hope that helped