Answer:
1.2/5÷3 1/10=
2/5÷31/10=
2/5×10/31=
20/155=
4/31
2.4 1/3÷4/7=
13/1÷4/7=
13/1×7/4=
91/4 then simplify it
3. 3 1/6÷9/10=
18/6÷9/10=
18/6×10/9=
180/54 then simplify it
4.5/8÷2 7/12=
5/8÷31/12=
5/8×12/31=
60/248=
15/62
Am done please mark me the brainliest and give me more points