пожалуйста помогите!!! привести дроби 3/4, 1/2, 3/5, 3/10, 9/20, 2/25, 9/50 к знаменателю 100

 3/4=75/100

1/2=50/100

3/5=60/100

3/10=30/100

9/20=45/100

2/25=8/100

 9/50=18/100

3/4 = 3/4*25=75/100

1/2 = 1/2*50 = 50/100

3/5 = 3/5*20 = 60\100

3/10 = 3/10*10 = 30 \100

9/20 = 9/20*5 = 45 \100 

2/25 = 2/25*4 = 8 \100

9/50 = 9/50*2 = 18 \100