Respuesta :

[tex]40\% \ of x = 56 \\ \\ \frac{40}{100}*x=56 \\ \\ x=56: \frac{40}{100} \\ \\ x=56* \frac{100}{40}= \frac{5600}{40}= 140 . \\ \\ \\\\\huge\text{The answer is x=140 !} [/tex]