Question

Resolva a expresao numerica e de o resultado na forma de fracao irredutivel que e 5/4×2/3 -2/5×7/4​

Answer 1

Resposta:

$\frac{5}{4} \times \frac{2}{3} - \frac{2}{5} \times \frac{7}{4} = \\ \frac{5}{2} \times \frac{1}{3} - \frac{1}{5} \times \frac{7}{2} = \\ \frac{5}{6} - \frac{7}{10} = \\ \frac{25 - 21}{30} = \\ \frac{4}{30} = \\ \frac{2}{15}$