Question

Calculați prin scădere repetată citurile:
18:9 ;21:7 ;24:6; 20:4; 40:10; 20:2

Answer 1

Explicație pas cu pas:

18:9=18-9-9=9-9=0=>18:9=2

21:7=21-7-7-7=14-7-7=7-7=0=>21:7=3

24:6=24-6-6-6-6=18-6-6-6=12-6-6=6-6=0=>24:6=4

20:4=20-4-4-4-4-4=16-4-4-4-4=12-4-4-4=8-4-4=4-4=0=>20:4=5

40:10=40-10-10-10-10=30-10-10-10=20-10-10=10-10=0=>40:10=4

20:2=20-2-2-2-2-2-2-2-2-2-2=18-2-2-2-2-2-2-2-2-2=16-2-2-2-2-2-2-2-2=14-2-2-2-2-2-2-2=12-2-2-2-2-2-2=10-2-2-2-2-2=8-2-2-2-2=6-2-2-2=4-2-2=2-2=0=>20:2=10

Succes!