Question

Помогите пож 2 4/5 - 2/9 : 10/27

Answer 1

Ответ:

$2\dfrac{1}{5}$

Объяснение:

$2\dfrac{4}{5}-\dfrac{2}{9}:\dfrac{10}{27}=2\dfrac{4}{5}-\dfrac{2}{9}\cdot \dfrac{27}{10}=$

$=2\dfrac{4}{5}-\dfrac{2\cdot 27}{9\cdot 10}=2\dfrac{4}{5}-\dfrac{2\cdot 3\cdot 9}{9\cdot 5\cdot 2}=$

$=2\dfrac{4}{5}-\dfrac{3}{5}=2\dfrac{1}{5}$