Question

7 sob 2 dividido por 21 sob 6​

Answer 1

$\frac{\frac{a}{b}}{\frac{c}{d}}=\frac{a}{b}.\frac{d}{c}$

Então,

$\frac{\frac{7}{2}}{\frac{21}{6}}=\frac{7}{2}.\frac{6}{21}=\frac{42}{42}=1$