Capacidad del tanque = x litros
[tex] \frac{x}{7}+100= \frac{x}{5} [/tex]
[tex] \frac{x}{7} - \frac{x}{5} =-100[/tex]
[tex] \frac{5x-7x}{35} =-100[/tex]
5x-7x = -100*35
-2x = -3500
[tex]x= \frac{-3500}{-2} [/tex]
x = 1.750
Capacidad del tanque es 1.750 litros