Question

Alguém me ajuda nessas questões pfv

Answer 1

a)

$( - \frac{5}{10} ) \times \frac{1}{2} \\ = \frac{5}{20}$

b)

$\frac{2}{1} \times ( - \frac{1}{9} ) \\ = - \frac{2}{9}$

c)

$( - \frac{2}{5} ) \times ( - \frac{3}{7} ) \\ = \frac{6}{35}$

d)

$( \frac{3}{7}) \times ( - \frac{1}{2}) \\ = - \frac{3}{35}$

e)

$( - \frac{1}{3} ) \times \frac{2}{1} \times ( - \frac{3}{1} ) \\ ( - \frac{2}{3} ) \times ( - \frac{3}{1} ) \\ = \frac{6}{3}$

f)

$( - \frac{2}{1} ) \times ( - \frac{1}{3} + \frac{5}{3} ) \\ ( - \frac{2}{1} ) \times ( - \frac{?}{6} + \frac{?}{6} ) \\ ( - \frac{2}{1} ) \times ( - \frac{2}{6} + \frac{10}{6} ) \\ ( - \frac{2}{1} ) \times ( - \frac{2}{1} ) \\ = \frac{4}{1} = 4$