Question

5 13/30-(2 1/10+1/5)=?

Answer 1

$5\tt\displaystyle\frac{13}{30}-\bigg(2\frac{1}{10}+\frac{1}{5}\bigg)=3\frac{2}{15}$

$1)~~2\tt\displaystyle\frac{1}{10}+\frac{1}{5}=2\frac{1}{10}+\frac{1*2}{5*2}=2\frac{1}{10}+\frac{2}{10}=2\frac{3}{10}$

$2)~~5\tt\displaystyle\frac{13}{30}-2\frac{3}{10}=5\frac{13}{30}-2\frac{3*3}{10*3}=5\frac{13}{30}-2\frac{9}{30}=3\frac{4}{30}=3\frac{\not2*2}{\not2*15}=3\frac{2}{15}$