Question

Номер 321 ПОМОГИТЕ!!!!!

Answer 1

1/2+5/8=4/8+5/8=9/8=1 1/8
3/4 - 1/2=3/4 - 2/2=1/4
7/10 - 3/5=7/10 - 6/10=1/10
5/7 - 3/14=10/14 - 3/14=7/14=1/2
5/9 - 5/12=20/36 - 15/36=5/36
7/12 - 7/20=35/60 - 21/60=14/60=7/30
5/6+3/8=20/24+9/24=29/24=1 5/24
19/21 - 11/15=95/105 - 77/105=18/105=6/35
21/22 - 3/55=105/110 - 6/110=99/110=9/11
5/42+10/63=15/126+20/126=35/126=5/18
11/21 - 2/35=55/105 - 6/105=49/105=7/15
5/24+7/60=25/120+14/120=39/120=13/40