7 + 8 = 15
6 + 8 = 14
12 − 9 = 3
16 − 7 = 9
16 − 9 = 7
14 − 9 = 5
Условие:
☐ + 8 = 15
6 + ☐ = 14
12 − ☐ = 3
☐ − 7 = 9
16 − ☐ = 7
☐ − 9 = 5
Условие:
☐ + 8 = 15
6 + ☐ = 14
12 − ☐ = 3
☐ − 7 = 9
16 − ☐ = 7
☐ − 9 = 5
7 + 8 = 15
6 + 8 = 14
12 − 9 = 3
16 − 7 = 9
16 − 9 = 7
14 − 9 = 5