Răspuns :
a) 4+2+2=8
2+2+2=6
6+2+2=10
8+2+2=12
10+2+2=14
b) 4-2-2=0
2-2-2=-2
6-2-2=2
8-2-2=4
10-2-2=6
2+2+2=6
6+2+2=10
8+2+2=12
10+2+2=14
b) 4-2-2=0
2-2-2=-2
6-2-2=2
8-2-2=4
10-2-2=6