2 years ago

I want to know the answer of these questions and the questions are

Mathematics

1 answer:

Dmitry [639]2 years ago

3 0

2 + 7 = 9

6 + 4 = 10

2 + - 7 = -5

- 2 + 7 = 5

- 2 + - 7 = -9

6 + - 4 = 2

- 6 + 4 = - 2

- 6 + - 4 = -10

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