Question

quanto falta acrescentar a 5/12 para completar 10/9 ?

Answer 1

$\frac{5}{12} + \frac{x}{1} = \frac{10}{9}$

$\frac{5+12x}{12} = \frac{10}{9}$

$5 + 12x = \frac{10*12}{9}$

$12x = \frac{40}{3} - 5$

$12x = \frac{25}{3}$

$x = \frac{\frac{25}{3}}{12}$

$x = \frac{25}{3*12}$

$x = \frac{25}{36}$