Сократите: (8*7+8*3)/(16*25-16*5).

\[\frac{8 \cdot 7 + 8 \cdot 3}{16 \cdot 25 - 16 \cdot 5} =\]

\[= \frac{8 \cdot (7 + 3)}{16 \cdot (25 - 5)} = \frac{8 \cdot 10}{16 \cdot 20} =\]

\[= \frac{1}{2 \cdot 2} = \frac{1}{4}\]