Answer:
1. The fraction is 11/9
Step-by-step explanation:
You didn't specify which ones you need help with so I'm answering the first one for you.
let x=1.2 —equation 1
10x=12.2 —equation 2
subtract equation 1 from 2
10x-x=12.2-1.2
9x=11
x=11/9
