Question

Calcule numérico das expressõe ​

Answer 1

Resposta:

$x + y \\ \\ \frac{1}{2} + ( - \frac{1}{5}) \\ \\ \frac{1}{2} - \frac{1}{5} \\ \\ \frac{5 - 2}{10} \\ \\ \frac{3}{10}$