Question

А)9/10 * 5/12 б)21/22*2/6 в)3/5*11/5 г)7/8:7/16 д)1 3/5*2 1/2 е)1 3/4:10 1/2 #2 А)8/9:6 в)1:3/7 д)2 7/9 * 15 б)15*5/6 г)2/5*12 е)3 1/3:30 #3 а)10:3 б)42:8 в)57:30 г)28:42

Answer 1

№ 1.

а) 9/10 · 5/12 =(3·1)/(2·4) = 3/8

б) 21/22 · 2/6 = (7·1)/(11·2) = 7/22

в) 3/5 · 11/5 = 33/25 = 1 целая 8/25

г) 7/8 : 7/16 = 7/8 · 16/7 = 16/8 = 2

д) 1 3/5 · 2 1/2 = 8/5 · 5/2 = 8/2 = 4

е) 1 3/4 : 10 1/2 = 7/4 : 21/2 = 7/4 · 2/21 = (1·1)/(2·3) = 1/6

№ 2.

а) 8/9 : 6 = 8/9 · 1/6 = (4·1)/(9·3) = 4/27

б) 15 · 5/6 = (5·5)/2 = 25/2 = 12 целых 1/2

в) 1 : 3/7 = 1 · 7/3 = 7/3 = 2 целых 1/3

г) 2/5 · 12 = 24/5 = 4 целых 4/5

д) 2 7/9 · 15 = 25/9 · 15 = (25·5)/3 = 125/3 = 41 целая 2/3

е) 3 1/3 : 30 = 10/3 · 1/30 = 10/90 = 1/9

№ 3.

а) 10 : 3 = 10/3 = 3 целых 1/3

б) 42 : 8 = 42/8 = 21/4 = 5 целых 1/4

в) 57 : 30 = 57/30 = 19/10 = 1 целая 9/10

г) 28 : 42 = 28/42 = 2/3

Answer 2

Sure! Let's solve each of the given expressions:

#1 a) (9/10) * (5/12) = (45/120) = 9/24 = 3/8 b) (21/22) * (2/6) = (42/132) = 7/22 c) (3/5) * (11/5) = 33/25 d) (7/8) / (7/16) = (7/8) * (16/7) = 16/8 = 2 e) (1 3/5) * (2 1/2) = (8/5) * (5/2) = 8/2 = 4

#2 a) (8/9) / (6) = (8/9) * (1/6) = 8/54 = 4/27 b) (1) / (3/7) = (1) * (7/3) = 7/3 = 2 1/3 d) (2 7/9) * (15) = (23/9) * (15) = 345/9 = 115/3 = 38 1/3 b) (15) * (5/6) = 75/6 = 12 3/6 = 12 1/2 g) (2/5) * (12) = 24/5 e) (3 1/3) / (30) = (10/3) / (30) = 10/90 = 1/9

#3 a) (10) / (3) = 3 1/3 b) (42) / (8) = 5 1/4 c) (57) / (30) = 19/10 = 1 9/10 g) (28) / (42) = 2/3