They must have common denominators
Answer: Maggie is 7 years old.
7 . 2 = 14
14-3=11
11+7=18
Hope this helps!
The answer to your question will be C
1. 5.75x29.99 (the totals the answer)
2. 7.5x649.999
Do you understand what I'm trying to show? Do it with all of them and you should have the answers... but sorry if its wrong. Its been a while since I learned this.