77)
24 : 4 = 36 : a
6 = 36 : a
a = 36 : 6
a = 6
Verific: 6 = 36 : 6
24 : a = 32 : 8
24 : a = 4
a = 24 : 4
a = 6
3 × 6 = 18 : a
18 = 18 : a
a = 18 : 18
a = 1 → impartitorul
32 : 8 = 4 × a
4 = 4 × a
a = 4 : 4
a = 1
48 : 8 = 2 × a
6 = 2 × a
a = 6 : 2
a = 3
42 : 7 = a × 3
6 = a × 3
a = 6 : 3
a = 2
4 × 4 : a = 8
16 : a = 8
a = 16 : 8
a = 2
6 × 4 : a = 8
24 : a = 8
a = 24 : 8
a = 3