1)
1. 933+1167=2100
2. 21600/72=300
3. 2100/300=7
Ответ 7
2)
1. 725*30=21750
2. 725-30=695
3. 21750-695=21055
Ответ 21055
5/21- 3/14= 10/42-9/42=1/42
2/15+(1/15+1/3)= 2/15+(1/15+5/15)=2/15+6/15=8/15
1/20+2/15+3/20+1/15= 3/60+8/60+9/60+4/60=24/60=3/10
(261• 4) + (96: 6) = 1044+ 16=1060