Question

Consider the expression −2 + 5a + b + 2a − 5b.

Answer 1

Answer:

2a is the answer

Step-by-step explanation:

Answer 2

Like terms will have exactly the same variables

so 5a and 2a are like terms

examples :
3b and 4b are like terms
3b and 4a are not like terms
2a^2 + 3a^2 are like terms
2a and 3a^2 are not like terms
3ab and 4ba are also like terms...even though the variables are switched
6b^2a and 6a^2b are not like terms