\(0,2\left(63\right)=\frac{263-2}{990}=\frac{29}{110}\)
rõ hơn nè:
\(0,2\left(63\right)=0,2+0,0\left(63\right)\)
\(=\frac{1}{5}+0,1.0,\left(63\right)\)
\(=\frac{1}{5}+\frac{1}{10}.0,\left(01\right).63\)
\(=\frac{1}{5}+\frac{1}{10}.\frac{1}{99}.63\)
\(=\frac{29}{110}\)