Question

Реши примеры по действиям. 1) (3/7+1/5)-3/5; 2) (5/6-1/3)+8/10; 3) (3/4-1/3)- 2/8​

Answer 1

Ответ:

1.(3/7+1/5)-3/5=(15/35+7/35)-21/35=22/35-21/35=1/35

2.(5/6-1/3)+8/10=(25/30-10/30)+24/30=15/30+24/30=39/30=1 9/30

3. (3/4-1/3)-2/8=(18/24-8/24)-6/24=10/24-6/24=4/24=1/6

Answer 2

1) (3/7 + 1/5) - 3/5 = (15/35 + 7/35) - 3/5 = 22/35 - 3/5 = 22/35 - 21/35 = 1/35

2) (5/6 - 1/3) + 8/10 = (5/6 - 2/6) + 8/10 = 3/6 + 8/10 = 1/2 + 8/10 = 5/10 + 8/10 = 13/10 = 1 3/10

3) (3/4 - 1/3) - 2/8​ = (9/12 - 4/12) - 2/8 = 5/12 - 2/8 = 5/12 - 1/4 = 5/12 - 3/12 = 2/12 = 1/6