Use the distributive property to remove the parentheses.

7 (w+3)

What is this answer

Answer: ok, simple. Distributive property means you multiply the outside number by everything inside the parentheses. (). So, we have 7 outside and w+3 inside. So we are going to multiply 7 by w first, and you get 7w. We also have 3 inside the parentheses so multiply seven by 3 also. U get 21. Now, put them together and bring down the addition sign as well. Answer is 7w+21

7w+21