Question

What is 4 / 3/7? Is it 28/3? Or 4/21?

Answer 1

THE ANSWER IS 28/7
HOPE IT HELPS

Answer 2

$\frac{4}{ \frac{3}{7} }$
= 4 ÷ $\frac{3}{7 }$
= 4 × $\frac{7}{3 }$
= $\frac{28}{3 }$

Hope this helped! Ask me if there's any part of the working you don't understand :)