Question

2 1) 1=+-1 3 7 + 8 6 +-2 7 12​

Answer 1

Пошаговое объяснение:

вот правильный ответ да.

Answer 2

The expression you provided seems to be a combination of numbers and operators. However, it appears to be improperly formatted, making it difficult to understand the intended meaning or calculation.

If you can provide more information about the specific mathematical operation you want to perform or clarify the expression, I would be happy to assist you further.