Question

cuánto hay que quitarle a 1/5 para ser igual al triple de 4/15​

Answer 1

Respuesta:

$\frac{1}{5} - x = 3 \times \frac{4}{15} \\ \\ \frac{1}{5} - x = \frac{12}{15} \\ \\ \frac{1}{5} - x = \frac{4}{5} \\ \\ \frac{1}{5} - \frac{4}{5} = x \\ \\ - \frac{3}{5} = x \\ comprobamos \\ \frac{1}{5} - ( - \frac{3}{5} ) = 3 \times \frac{4}{15} \\ \\ \frac{1}{5} + \frac{3}{5} = \frac{12}{15} \\ \\ \frac{4}{5} = \frac{4}{5}$