Question

A)1/7
B)9/12
C)4/7
D)5/4

Answer 1

  $\frac{5}{7}$ · $\frac{4}{5}$ = $\frac{20}{35}$ = $\frac{1}{7}$

$\frac{5}{7}$ vc irar mutiplicar por  $\frac{4}{5}$ e o resutado será  $\frac{20}{35}$  

20/2 = 10/2 =5/5 =1

35/5 = 7