Răspuns :
a+b+c=54
a|............|...........|..........|
b|............|
c|............||..........|..........|...........|...........|
aflam numarul b:
54:9=6(b)
aflam numarul a:
6×3=18(a)
aflam numarul c:
6×5=30(c)
v:18+6+30=54
a+b+c=54
a|............|...........|..........|
b|............|
c|............||..........|..........|...........|...........|
aflam numarul b:
54:9=6(b)
aflam numarul a:
6×3=18(a)
aflam numarul c:
6×5=30(c)
v:18+6+30=54