Adauga 18la triplul numerelor :4,5,3,2,1

Răspuns :

18+3x4=18+12=30
18+3x5=18+15=33
18+3x3=18+9=27
18+3x2=18+6=24
18+3x1=18+3=21
12+18=30
15+18=33
9+18=27
6+18=24
3+18=21