Question

ayuda .................​

Answer 1

Respuesta:

$\frac{2}{5} + \frac{3}{8} = \frac{2 \times 8 + 5 \times 3}{5 \times 8} = \frac{31}{40} \\ \frac{6}{12} \div \frac{4}{8} = \frac{1}{2} \div \frac{1}{2} = \frac{1}{2} \times \frac{2}{1} = \frac{2}{2} = 1$