Verified answer

Ответ:

-1

Пошаговое объяснение:

1) -4,5 : 9/14 = -45/10 * 14/9 = -5/5 * 7/1 = -35/5 = -7

2) -8 2/9 - (-7) = -8 2/9 + 7 = -1 2/9

3) -1 2/9 * 2 1/4 = -11/9 * 9/4 = -11/4 = -2 3/4

4) -3 3/4 - (-2 3/4) = -3 3/4 + 2 3/4 = -1