Answer:
a=2
Step-by-step explanation:
You can have "a" on both sides and still get an answer easily. You start off by adding 8a to the right. That makes 8+4a=16. You then subtract 8 from 16 and get 4a=8. Divide by 4 to get your answer. You get a=2
1. $1.40 2. $8.40
1. 7 divided by 5 is 1.4
2. 1.40 plus $7 equals $8.40