Question

Calcule :

4!/3! + 5!/7! =

Answer 1

Resposta:

$\frac{13}{4}$

Explicação passo-a-passo:

$\frac{4!}{3!}=\frac{4.3!}{3!}=4$

$\frac{5!}{7!}=\frac{5!}{7.6.5!}=\frac{1}{42}$

$4+\frac{1}{42}=\frac{168+1}{42}=\frac{169}{42}=\frac{13}{4}$