Question

Resolva:

\frac{3}{2} + \frac{1}{10}=

0,3 - \frac{1}{4}=

\frac{2}{30} - 4=

Answer 1

$\frac{3}{2} + \frac{1}{10}=\frac{3*5}{2*5} = \frac{1}{10} = \frac{15}{10} + \frac{1}{10} = \frac{16:2}{10:2} = \frac{8}{5}$
$0,3 - \frac{1}{4}= \frac{3*2}{10*2} - \frac{1*5}{4*5} = \frac{6-5}{20}$ $\frac{1}{20}$
$\frac{2:2}{30:2} =\frac{1}{15} - \frac{4}{1} = \frac{1-60}{15}} - 4= \frac{-59}{15}$