Question

4000:800+1500:30-2800:28

Answer 1

4000÷800+1500÷30-2800:28= -45

Answer 2

1) 4000 ÷ 800 = 5
2) 2800 ÷ 28 = 100
3) 1500 ÷ 30 = 50 
4) 4 + 50 = 55
5) 55 - 100 = -45
Ответ: -45