5 июня
Реши уравнения:
- а) 15\( \frac{2}{3} \)-x = 5\( \frac{5}{6} \)
\( 15\frac{2}{3} = \frac{47}{3} \)
\( 5\frac{5}{6} = \frac{35}{6} \)
\( \frac{47}{3} - x = \frac{35}{6} \)
\( x = \frac{47}{3} - \frac{35}{6} \)
\( x = \frac{94}{6} - \frac{35}{6} \)
\( x = \frac{59}{6} = 9\frac{5}{6} \) - б) x-1\( \frac{5}{12} \) = 2\( \frac{5}{24} \)
\( 1\frac{5}{12} = \frac{17}{12} \)
\( 2\frac{5}{24} = \frac{53}{24} \)
\( x - \frac{17}{12} = \frac{53}{24} \)
\( x = \frac{53}{24} + \frac{17}{12} \)
\( x = \frac{53}{24} + \frac{34}{24} \)
\( x = \frac{87}{24} = \frac{29}{8} = 3\frac{5}{8} \)
Ответ: а) x = 9\( \frac{5}{6} \); б) x = 3\( \frac{5}{8} \).