Question

me ajudem por favor​

Answer 1

Resposta:

a) $\frac{2}{15}$

b)$\frac{4}{10}=\frac{2}{5}$

c) $-\frac{4}{15}.(-\frac{2}{4})=\frac{8}{60}=\frac{2}{15}$

d) $(-\frac{1}{20}).(\frac{2}{7})=-\frac{2}{140}=-\frac{1}{70}$

e) $(-\frac{7}{4}).(-\frac{2}{1}).\frac{6}{12} =\frac{14}{4}.\frac{6}{12}=\frac{84}{48}=\frac{6}{6}=1$

f) $-\frac{1}{2}$