Question

4)Se 1/a + 1/b = 1/c, com a= 1/2 e b=1/3, então quanto vale c?​

Answer 1

Explicação passo-a-passo:

$\dfrac{1}{a}+\dfrac{1}{b}=\dfrac{1}{c}$

$\dfrac{1}{\frac{1}{2}}+\dfrac{1}{\frac{1}{3}}=\dfrac{1}{c}$

$2+3=\dfrac{1}{c}$

$5=\dfrac{1}{c}$

$5c=1$

$c=\dfrac{1}{5}$