Question

quanto é 3/5 . 14/9 . 10/49 ?

Answer 1

$\frac{3}{5}\cdot\frac{14}{9}\cdot\frac{10}{49}=\\\\\frac{3\cdot14\cdot10}{5\cdot9\cdot49}=\\\\\frac{420}{2205}\div105=\frac{4}{21}$


Espero ter ajudado.
Bons estudos! :)