Question

ayuda plis doy corona ​

Answer 1

Explicación paso a paso:

1)

$\frac{4}{2} + \frac{2}{7} \\ = \frac{28 + 4}{14} \\ = \frac{32}{14}$

2)

$\frac{3}{5} + \frac{5}{9} \\ = \frac{27 + 25}{45} \\ = \frac{52}{45}$

3)

$\frac{2}{9} + \frac{2}{6} \\ = \frac{12 + 18}{54} \\ = \frac{30}{54}$

4)

$\frac{6}{7} + \frac{3}{4} \\ = \frac{24 + 21}{28} \\ = \frac{45}{28}$

5)

$\frac{8}{9} + \frac{4}{4} \\ = \frac{32 + 36}{36} \\ = \frac{68}{36}$

6)

$\frac{4}{5} - \frac{5}{8} \\ = \frac{32 - 25}{40} \\ = \frac{7}{40}$

7)

$\frac{7}{8} - \frac{2}{3} \\ = \frac{21 - 16}{24} \\ = \frac{5}{24}$

8)

$\frac{4}{5} - \frac{4}{7} \\ = \frac{28 - 20}{35} \\ = \frac{8}{35}$

9)

$\frac{2}{3} - \frac{6}{9} \\ = \frac{18 - 18}{27} \\ = \frac{0}{27} \\ = 0$

10)

$\frac{6}{7} - \frac{4}{5} \\ = \frac{30 - 28}{35} \\ = \frac{2}{35}$