Question

Помогите
5. Реши примеры.

1 + 1 = 1 + 2 = 2 + 1 =
2 - 1 = 3 - 1 = 3 - 2 =

Answer 1

1+1=2
1+2=3
2+1=3
2-1=1
3-1=2
3-2=1