А)427 051:839-390 912:768+252 000:1260+249 249:249.

Question

А)427 051:839-390 912:768+252 000:1260+249 249:249.

Answer 1

1)427051/839=509

2)390912/768=509

3)509-509=0

4)252000/1260=200

5)249249/249=1001

6)200+1001=1201

Answer 2

1)427 051:839=509

2)390 912:768=509

3)252 000:1260=200

4)249 249:249=1001

5)509-509+200+1001=1201