Question

помогите пж дам 100 балов​

Answer 1

Пошаговое объяснение:

(2 1/3 - 7 1/7) - (-10 2/3 + 7 3/7) =

2 1/3 - 7 1/7 + 10 2/3 - 7 3/7 =

(2 1/3 + 10 2/3) + (-7 1/7 - 7 3/7) =

12 3/3 + (-14 4/7) = 13 - 14 4/7 = -1 4/7

Если перед двойкой стоит минус

(-2 1/3 - 7 1/7) - (-10 2/3 + 7 3/7) =

-2 1/3 - 7 1/7 + 10 2/3 - 7 3/7 =

(-2 1/3 + 10 2/3) + (-7 1/7 - 7 3/7) =

8 1/3 + (-14 4/7) = 8 1/3 - 14 4/7 =

8 7/21 - 14 12/21 = -6 5/21