1) 4/5 и 3/8
32/40 > 15/40⇒ 4/5 > 3/8
2) 24/360= на 6 =4/60= на 4 =1/15
3) 5/7 4/5
25/35 < 28/35 ⇒5/7<4/5
4) 45/270= на 9 =5/30= на 5 =1/6.
