Răspuns :
a |____|
b|____|____|
c|____|____|____|____| }84
84:7=12 a
12×2=24 b
12×4=48 c
Verificare : 12+24+48=84
b|____|____|
c|____|____|____|____| }84
84:7=12 a
12×2=24 b
12×4=48 c
Verificare : 12+24+48=84