Question

alguém para me ajudar??? ​

Answer 1

Resposta:

$\frac{3}{9} + \frac{2}{5} \\ \\ \frac{15 + 18}{45} \\ \\ \frac{33}{45} \div (3) \\ \\ \frac{11}{15}$

$\frac{1}{8} - \frac{5}{2} \\ \\ \frac{1 - 20 }{8} \\ \\ - \frac{19}{8}$

$\frac{6}{8} \times \frac{5}{7} \\ \\ \frac{30}{56} \div (2) \\ \\ \frac{15}{28}$

$\frac{7}{2} \div \frac{28}{8} \\ \\ \frac{7}{2} \times \frac{8}{28} \\ \\ \frac{56}{56} \\ \\ = 1$