Question

\(\frac{8}{10}+\frac{2}{5}+\frac{3}{15}+\frac{4}{20}=????\)

Answer 1

\(\frac{4}{5}+\frac{2}{5}+\frac{1}{5}+\frac{1}{5}\)

\(\frac{6}{5}+\frac{2}{5}\)

\(\frac{8}{5}\)

Answer 2

Mẫu số chung là 5 !

\(\frac{8}{10}+\frac{2}{5}+\frac{3}{15}+\frac{4}{20}=\frac{4}{5}+\frac{2}{5}+\frac{1}{5}+\frac{1}{5}=\frac{4+2+1+1}{5}=\frac{8}{5}\)