tolong jawab no 2 and 3 sama caranya

2. a.) 3/5 , 70/100 , 55/100 , 500/1000
=>60/100 , 70/100 , 55/100 , 50/100
=>terkecil ke besar
500 permil , 0,55 , 3/5 , 70%

b.) 1/6 , 350/1000 , 30/100 , 25/100
=>16,67/100 , 35/100 , 30/100 , 25/100
=>1/6 , 0,25 , 30% , 350 permil

3.
b) 75/10 - 25/100 +7/5
=>15/2 - 5/20 + 7/5
=>(150-5+28)/20
=>173/20
=>8 13/20