Question

Resolva a equação fracionária:

$\frac{1}{x} + \frac{1}{12} = \frac{2}{15}$

Answer 1

$\frac{1}{x} + \frac{1}{12} = \frac{2}{15}$

Multiplicando por 12.15.x :

$\frac{12.15.x}{x} + \frac{12.15.x}{12} = \frac{12.15.x.2}{15}$

12.15 + 15.x = 12.x.2

180 + 15x = 24x

24x-15x = 180

9x = 180

x = 180/9

x = 20