Explicație pas cu pas:
6 × 4 = 2 × 3 × a
24 = 6 × a
6 × a = 24
a = 24 ÷ 6
a = 4
6 × 4 = 2 × 3 × 4
8 × 3 = 4 × a × 2
24 = 4 × 2 × a
24 = 8 × a
8 × a = 24
a = 24 ÷ 8
a = 3
8 × 3 = 4 × 3 × 2
6 × 2 = a × 3 × 2
12 = a × 6
a × 6 = 12
a = 12 ÷ 6
a = 2
6 × 2 = 2 × 3 × 2
2 × 8 = 2 × 2 × a
16 = 4 × a
4 × a = 16
a = 16 ÷ 4
a = 4
2 × 8 = 2 × 2 × 4
9 × 2 = 3 × a × 2
18 = 3 × 2 × a
18 = 6 × a
6 × a = 18
a = 18 ÷ 6
a = 3
9 × 2 = 3 × 3 × 2
6 × 5 = a × 5 × 2
30 = a × 10
a × 10 = 30
a = 30 ÷ 10
a = 3
6 × 5 = 3 × 5 × 2