5 5 12+6 =

Сложим дроби.

• $$\frac{5}{12} + \frac{5}{6} = \frac{5 \cdot 1}{12 \cdot 1} + \frac{5 \cdot 2}{6 \cdot 2} = \frac{5}{12} + \frac{10}{12} = \frac{5+10}{12} = \frac{15}{12} = \frac{5}{4}$$

Ответ: $$\frac{5}{4}$$