How to expand and simplify this equation 7 (2a+3) + 3 (4a-2).

Ok, so first we distribute, you multiply the seven into everything in the parentheses next to it. So far we have, 14a+21+3 (4a-2). You distribute the three into the parentheses to get, 14a+21+12a-6. You combine the like terms to get, 26a-15. You cannot simplify it any further so the answer is 26a-15.

First distribute using distributive property

a (b+c) = ab+ac

7 (2a+3) = 14a+21

3 (4a-2) = 12a-6

add

14a+21+12a-6=26a+15

tada

26a+15