Question

Poderiam responder com cálculos Pfvr!!

Answer 1

$a)(\frac{8}{3} + \frac{8}{2} )$ × $(\frac{1}{5} -\frac{1}{6})$ $= \frac{20}{3}$ × $\frac{1}{30} = \frac{20}{90} = \frac{2}{9}$

$b) (\frac{2}{3} - \frac{2}{5} ) : (\frac{1}{5} +\frac{3}{8}) = \frac{4}{15} : \frac{23}{40} =$ $\frac{4}{15}$ × $\frac{40}{23} = \frac{160}{345} = \frac{32}{69}$

fiquei com preguiça de fazer todas as contas, vou simplificar:

$c) \frac{1}{20}$ × $\frac{13}{21} = \frac{13}{420}$

$d)\frac{8}{21}$ × $\frac{13}{21} = \frac{104}{441}$

$e)\frac{1}{6}$ × $\frac{29}{30} = \frac{29}{180}$