Question

Resolva essa operação:

$\frac{1}{3} \div \frac{1}{3} - \frac{3}{9} \div \frac{9}{3} =$
por favor me ajudem ~•~

Answer 1

$\frac{1}{3} \times \frac{3}{1} - \frac{3}{9} \times \frac{9}{3} = \\ \frac{3}{3} - \frac{27}{27} = \\ 1 - 1 = 0$