2 15 19+15 19 =?

$$2 \frac{15}{19} + 1 \frac{5}{19} = (2 + 1) + (\frac{15}{19} + \frac{5}{19})$$

$$= 3 + \frac{15+5}{19} = 3 + \frac{20}{19} = 3 + \frac{19+1}{19} = 3 + 1 \frac{1}{19} = 4 \frac{1}{19}$$

Ответ: $$4 \frac{1}{19}$$