1. Вычислите: 1) $\frac{2}{5}-\frac{4}{5}$; 2) $1870-\frac{5}{22}$; 3) $5\frac{1}{5}-6\frac{1}{6}$.

Question

Вопрос: $Фото задания: 1. Вычислите: 1) $\frac{2}{5}-\frac{4}{5}$; 2) $1870-\frac{5}{22}$; 3) $5\frac{1}{5}-6\frac{1}{6}$.$ Фото задания

Accepted Answer

1) $\frac{2}{5}-\frac{4}{5}=\frac{2-4}{5}=-\frac{2}{5}$.

2) $1870-\frac{5}{22}=1869\frac{17}{22}$.

3) $5\frac{1}{5}-6\frac{1}{6}=\frac{26}{5}-\frac{37}{6}=\frac{156-185}{30}=-\frac{29}{30}$.

Ответ: 1) $-\frac{2}{5}$; 2) $1869\frac{17}{22}$; 3) $-\frac{29}{30}$.

1. Вычислите: 1) \(\frac{2}{5}-\frac{4}{5}\); 2) \(1870-\frac{5}{22}\); 3) \(5\frac{1}{5}-6\frac{1}{6}\).