tolong dijawab!!! memakai cara!!!

Itu jawabannya, monggo dilihat

1)5/7+3/5=25/35+21/35=46/35= 1 11/35
2)7/15-1/10=14/30-3/30=11/30
3)0,8-0,35=8/10-35/100=80/100-35/100=45/100=9/20
4)3 1/4:1/2=13/4:1/2=13/4 x 2/1=26/4=6 2/4 =6 1/2
5)15,05+3.251=1505/100+3251/1=1505/100+325100/100=475600/100=4756
Kalau salah,maaf