Răspuns:
4/83:
48:a=8 a=48:8=6
18:a=3 a=18:3=6
10:a=1 a=10:1=10
30:a=6 a=30:6=5
72:a=8 a=72:8=9
48:a=6 a=48:6=8
5/83
A) c=24
b=24:3=8
a=2×8=16
8+16+24=48
B) c=6
b=24:6=4
a=4+4=8
6+4+8=18
C). lipsește ceva
6/83
3×3=9
4×4=16
1×1=1
2×2×2=8
3×3×3=27
1×1×1=1
4×4=16
2×2×2×2=16