Question

preciso que fazam com explicaçõens pois n sei fazer​

Answer 1

Resposta:

a)

$\frac{ \frac{1}{2} - \frac{1}{4} }{ - \frac{5}{8} - \frac{7}{5} } \\ \\ tira \: o \: mmc \: de \: (2.4) \: e \: (8.5) \: \\ \\ (2.4) = 4 \\ (8.5) = 40 \: \\ \\ \frac{ \frac{2 - 1}{4} }{ \frac{ - 25 - 56}{40} } \\ \\ \frac{ \frac{1}{4} }{ \frac{ - 81}{40} } \\ \frac{1}{4} \times \frac{40}{ - 81} \\ - \frac{10}{ 81}$

c)

$\frac{ \frac{7}{5} }{1 + ( \frac{3}{5} \times \frac{15}{2} ) } \\ \\ \frac{ \frac{7}{5} }{1 + \frac{3}{1} \times \frac{3}{2} } \\ \\ \frac{ \frac{7}{5} }{1 + \frac{9}{2} } \\ \frac{ \frac{7}{5} }{ \frac{2 + 9}{2} } \\ \\ \frac{ \frac{7}{5} }{ \frac{11}{2} } \\ \\ \frac{7}{5} \times \frac{2}{11} \\ \\ \frac{14}{55}$