Question

quanto é 27/32 × 16/21 × 7

Answer 1

27/32 . 16/21 . 7/1 

27/32 . 112/21

3024/672 =  63/14  ou  4,5                    ok

Answer 2

$\frac{27}{32} x \frac{16}{21} x 7$

0,84375 x 0,7619047619047619 x 7

=4,5