Сократите: (19*9+19*6)/(19*70-19*25).

\[\frac{19 \cdot 9 + 19 \cdot 6}{19 \cdot 70 - 19 \cdot 25} =\]

\[= \frac{19 \cdot (9 + 6)}{19 \cdot (70 - 25)} = \frac{15}{45} = \frac{1}{3}\]