Question

-5/18×2 1/10 + (-5/6) × 2 2/5​

Answer 1

-5/18 · 2 1/10 + (-5/6) · 2 2/5 = -2 7/12

1) -5/18 · 2 1/10 = -5/18 · 21/10 = -(1·7)/(6·2) = -7/12

2) -5/6 · 2 2/5 = -5/6 ·12/5 = -12/6 = -2

3) -7/12 + (-2) = -2 7/12

Ответ: (-2 целых 7/12).