Question

Quanto é 42/99 divido por 84/99?

Answer 1

$\sf \displaystyle \frac{42}{99}\div \frac{84}{99}\\\\\\Propriedade ~ \frac{a}{b}\div \frac{c}{d}=\frac{a}{b}\times \frac{d}{c}\\\\\\\sf \frac{42}{99}\times \frac{99}{84}\\\\\\\sf \frac{42\times \:99}{99\times \:84}\\\\\\\sf \frac{42}{84}\\\\\\\boxed{\sf S=\{ \frac{1}{2}\approx0,5\}}$