Question

Как это решается?Помогите, пожалуйста.

Answer 1

3 3/7 - 2 2/3 = 24/7 - 8/3 = 72/21 - 56/21 = 16/21

2 5/8 * 16/21 = 21/8 * 16/21 = 2

Answer 2

$(3 \frac{3}{7} - 2 \frac{2}{3} ) \times 2 \frac{5}{8} = \\ ( 1 + \frac{3}{7} - \frac{2}{3} ) \times \frac{21}{8} = \\ = ( 1 + \frac{9 - 14}{21} ) \times \frac{21}{8} = \\ = \frac{16}{21} \times \frac{21}{8} = \frac{16}{8} = 2$