Question

Выполните выражение:1/2 - 1/3 ; 3/5-4/7;5/7-1/6;3/+4/5;3/3/4+2/9

Answer 1

1/2 - 1/3=3/6 - 2/6=1/6

3/5 - 4/7=21/35 - 20/35=1/35

5/7 - 1/6=30/42 - 7/42=23/42

3/4 + 4/5 =15/20+16/20=31/20=1 11/20

3/4+2/9=27/36+8/36=35/36

Answer 2

5/42+10/63=15/126+20/126=35/126=5/18

Answer 3

11/21 - 2/35=55/105 - 6/105=49/105=7/15

Answer 4

5/24 - 7/60=25/120 - 14/120=11/120

Answer 5

пропустил 21/22 - 3/55=105/110 - 6/110=99/110

Answer 6

=9/10

Answer 7

1/2-1/3=3/6-2/6=1/6;
3/5-4/7=21/35-20/35=1/35
5/7-1/6=30/42-7/42=23/42
3/+4/5=?
3/3/4+2/9=?