Question

1) 20-15=? 2) 10-1=? 3) 20-30=? 4) 10-9=? 5) 69+145=?

Answer 1

Ответ:

1)5

2) 9

3) -10

4) 1

5) 214

Пошаговое объяснение:

.........

Answer 2

1) 20 - 15 = 5 2) 10 - 1 = 9 3) 20 - 30 = -10 4) 10 - 9 = 1 5) 69 + 145 = 214

Here are the answers to the arithmetic expressions you provided:

1) 20 - 15 = 5 2) 10 - 1 = 9 3) 20 - 30 = -10 4) 10 - 9 = 1 5) 69 + 145 = 214

If you have any further questions or need more explanation, feel free to ask!