Вопрос:

Вычислите: 2) 3/4 : 9 + (0,732 − 0,7(5)) : 0,009;

Ответ:

\(\frac34:9=\frac{1}{12}\), а \(0,7(5)=\frac{34}{45}\).

\[0,732-\frac{34}{45}=\frac{183}{250}-\frac{34}{45}=-\frac{53}{2250}.\]

\[-\frac{53}{2250}:0,009=-\frac{53}{2250}:\frac{9}{1000}=-\frac{106}{405}.\]

\[\frac{1}{12}-\frac{106}{405}=\frac{135-424}{1620}=-\frac{289}{1620}.\]

Ответ: \(-\frac{289}{1620}\).