Решите уравнение: 1/4*x+1/6*x+1/8*x=39/56.

Ответ:

\[\frac{1^{\backslash 6}}{4}x + \frac{1^{\backslash 4}}{6}x + \frac{1^{\backslash 3}}{8}x = \frac{39}{56}\]

\[\frac{6 + 4 + 3}{24}x = \frac{39}{56}\]

\[\frac{13}{24}x = \frac{39}{56}\]

\[x = \frac{39 \cdot 24}{56 \cdot 13} = \frac{9}{7}\]

\[x = 1\frac{2}{7}.\]