Tolong jawab yh pliss!! Pake cara!! Soalnya bsk dikumpulin!!

1.3/15+7/15=10/15
2.8/9-5/9+10/9=13/9=1 4/9
3.5/10+4/20=5/20+4/20=9/20
4.6/100+8/100+2/5=6/100+8/100+40/100=54/100:2=27/50
5.4/16+3/4=4/16+12/16=16/16=1
6.15/4x2/3