Question

Resolva as expressõe abaixo observando a ordem correta de resovoluçao das diferentes operaçao ( 3/4 -2/3 . 1/2) : 5/12

Answer 1

$(\frac{3}{4} - \frac{2}{3} . \frac{1}{2} ): \frac{5}{12} = \\ \\ =(\frac{3}{4} - \frac{2}{6} ): \frac{5}{12}= \\ \\ =( \frac{3.3}{12} - \frac{2.2}{12} ): \frac{5}{12} = \\ \\ =( \frac{9-4}{12} ): \frac{5}{12} = \\ \\ =\frac{5}{12} . \frac{12}{5} =1$