Question

помогите выполни действия:

Answer 1

2) 69/70*7/23-4/25:4/5+3/5*25/36=3/10-1/5+5/12=18/60-12/60+25/60=31/60
4) 125/147*21/50-70/119*17/210-3/14*7/9=5/14-1/21-1/6=15/42-2/42-7/42=6/42=1/7