Question

12a-7b+9a+7b plzzzzzzzz​

Answer 1

Answer:

(12a+9a)+(7b-7b)

=21a+0

=21a

Answer 2

Step-by-step explanation:

=12a-7b+9a+7b

=(12a+9a)+(7b-7b)

=21a+1b

This is the simplest form, I can solve!

♛Please select my answer as the brainliest.