Question

помогите номер 279, 280​

Answer 1

номер 279

1) 9/10<10/9

2) 2/9<7/8

3) 5/7>3/7

номер 280

1)28/29–19/58=56/58–19/58=37/58

2)4/5–1/6=24/30–5/30=19/30

3)11/15–1/5=11/15–3/15=8/15

4)31/36–7/12=31/36–21/36=10/36=5/18