Question

(4 - 14/33 помножити на 1 1/21) помножити на 5 5/8​

Answer 1

$\bigg(4-\dfrac{14}{33}\cdot1\dfrac1{21}\bigg)\cdot5\dfrac58=\bigg(4-\dfrac{14\cdot22}{33\cdot21}\bigg)\cdot\dfrac{45}{8}=\bigg(4-\dfrac{2\cdot2}{3\cdot3}\bigg)\cdot\dfrac{45}8=\bigg(\dfrac{36}9-\dfrac{4}{9}\bigg)\cdot\dfrac{45}8=$

$=\dfrac{32}{9}\cdot\dfrac{45}8=\dfrac{4\cdot5}{1\cdot1}=20$

Ответ: 20