Question

30 pontos (se puderem colocar o passo a passo eu agradeço) e para amanhã

a)
$\frac{8}{5} \times \frac{7}{8} =$

b)
$\frac{17}{7} \times \frac{4}{17} =$

c)
$\frac{2}{3} \times \frac{1}{4} \times \frac{8}{5} =$

d)
$\frac{14}{5} \times \frac{2}{7} \times \frac{49}{6} =$

e)
$\frac{8}{15} \times \frac{1}{3} \times \frac{45}{16} =$

f)
$\frac{3}{7} \times \frac{4}{9} \times \frac{14}{3} =$

​

Answer 1

Resposta:

Explicação passo a passo:

a) $\frac{8}{5} * \frac{7}{8}$ = $\frac{1}{5}*7$= $\frac{7}{5}$ = 1,4

b) $\frac{17}{7} * \frac{4}{17}$ = $\frac{1}{7} * 4$ = $\frac{4}{7}$ = 0,571428

c) $\frac{2}{3} *\frac{1}{4} *\frac{8}{5}$ = $\frac{2}{3} *\frac{2}{5}$ = $\frac{4}{15}$ = 0,26

d) $\frac{14}{5} *\frac{2}{7} *\frac{49}{6}$ = $\frac{2}{5} *\frac{14}{3}$ = $\frac{98}{15}$ = 6,53

e) $\frac{8}{15} *\frac{1}{3} *\frac{45}{13}$ = $8*\frac{1}{3} * \frac{3}{16}$ = $\frac{1}{3} *\frac{3}{2}$ = $\frac{1}{2}$ = 0,5

f) $\frac{3}{7} *\frac{4}{9} *\frac{14}{3}$ = $\frac{1}{7} *\frac{4}{9} *14$ = $\frac{4}{9} *2$ = $\frac{8}{9}$ = 0,8