Question

Вычеслите: 4/18 : 2/9,13/40 :30/80,7/15 :3/10

Answer 1

4/18:2/9=4*9/18*2=1
13/40:30/80=13*80/40*30=13/15
7/15:3/10=7*10/15*3=14/9=1 5/9