Answer:
9a+7b
Step-by-step explanation:
1. 15a+5b-6a+2b
2. 9a+7b
To simply using the distributive property you have to multiply the number outside the parentheses ( ) with the numbers inside the parentheses (like in step 1).
To combine like terms you have to add the numbers with the same variable together (like in step 2).
