Решение:
a) \(2 + \frac{4}{7} = 2 \frac{4}{7} = \frac{2*7 + 4}{7} = \frac{18}{7}\)
b) \(10 + \frac{20}{30} = 10 \frac{20}{30} = 10 \frac{2}{3} = \frac{10*3 + 2}{3} = \frac{32}{3}\)
c) \(34 + \frac{46}{67} = 34 \frac{46}{67} = \frac{34*67 + 46}{67} = \frac{2324}{67}\)
Ответ:
a) \(2 \frac{4}{7} = \frac{18}{7}\)
b) \(10 \frac{2}{3} = \frac{32}{3}\)
c) \(34 \frac{46}{67} = \frac{2324}{67}\)