Verified answer

[tex]1)( \frac{3}{4} + \frac{1}{20}) \times \frac{1}{2} = \frac{2}{5} [/tex]

[tex]2)( \frac{7}{12} - \frac{1}{3} ) \times \frac{16}{19} = \frac{4}{19} [/tex]

Ответ:

жизаа............ . .........