Question

дам 40 баллов, помогите! ​

Answer 1

1.

а). 3/5 • 4/5 = 12/25

б). 4/7 • 5/8 = 20/56 = 10/28 = 5/14

в). 11/15 • 5/9 = 11/3 • 1/9 = 11/27

г). (4/5)2 = 4/5 • 4/5 = 16/25

д). 2/3 : 7/11 = 2/3 • 11/7 = 22/21 = 1 1/21

е). 12/25 : 4/5 = 12/25 • 5/4 = 3/5 • 1 = 3/5

ж). 5/8 : 4 = 5/8 • 1/4 = 5/32

з). 6 : 3/8 = 6/1 • 8/3 = 2/1 • 8/1 = 16

2.

а). 15/16 • (24/25 : 9/10) = 15/16 • (24/25 • 10/9) = 15/16 • (8/5 • 2/3) = 15/16 • 16/15 = 1

б). 14/15 : 7/5 • 9/10 = 14/15 • 5/7 • 9/10 = 2/3 • 1 • 9/10 = 1 • 3/5 = 3/5

в). 4/5 • 5/6 • 6/7 • 7/8 = 4/1 • 1 • 1 • 1/8 = 4/1 • 1/8 = 1 • 1/4 = 1/4