Question

(2/3+4/7)*42 помогите решить

Answer 1

$( \frac{2}{3} + \frac{4}{7} ) \times 42 = (\frac{14}{21} + \frac{12}{21} ) \times 42 = \frac{26}{21} \times 42 = \frac{26 \times 2}{1} = 52$