Question

-
-8+(-7)
4+(-7)
-2-(-3)
1/21-5/14​

Answer 1

Пошаговое объяснение:

-8 + (-7) = -(8 + 7) = -15

4 + (-7) = 4 - 7 = -(7 - 4) = -3

-2 - (-3) = -2 + 3 = 3 - 2 = 1

1/21 - 5/14 = 2/42 - 15/42 = -(15/42 - 2/42) = -13/42