Đáp án:
`70/29`
Giải thích các bước giải:
$2+\dfrac{1}{2+\dfrac{1}{2+\dfrac{1}{2+\dfrac{1}{2}}}}\\=2+\dfrac{1}{2+\dfrac{1}{2+\dfrac{1}{\dfrac{5}{2}}}}\\=2+\dfrac{1}{2+\dfrac{1}{2+\dfrac{2}{5}}}\\=2+\dfrac{1}{2+\dfrac{1}{\dfrac{12}{5}}}\\=2+\dfrac{1}{2+\dfrac{5}{12}}\\=2+\dfrac{1}{\dfrac{29}{12}}\\=2+\dfrac{12}{29}\\=\dfrac{70}{29}$.