Răspuns :
Explicație pas cu pas:
12:4=3
12-4-4-4=0
6:3=2
6-3-3=0
18:9=2
18-9-9=0
25:5=5
25-5-5-5-5-5=0
15:3=5
15-3-3-3-3-3=0
28:7=4
28-7-7-7-7=0
8:2=4
8-2-2-2-2=0
30:6=5
30-6-6-6-6-6=0
Explicație pas cu pas:
12:4=12-4-4-4
6:3=6-3-3
18:9=18-9-9
25:5=25-5-5-5-5-5
15:3=15-3-3-3-3-3
28:7=28-7-7-7-7
8:2=8-2-2-2-2
30:6=30-6-6-6-6-6