Question

ayudaaaaa, porfavor es urgente​

Answer 1

Respuesta:

$a. \frac{5}{7} \times \frac{7}{5} = 1$

$b. \frac{12}{15 } = 1 \div \frac{15}{12}$

$c.\frac{11}{23} \div \frac{5}{7} = \frac{5}{7} \times \frac{23}{11} = \frac{115}{77}$

$d. \frac{21}{33} \div \frac{6}{8} = \frac{168}{198}$