Đáp án:
Giải thích các bước giải:
1,
\[\begin{array}{l}
M = \frac{{20182018.2017}}{{{2^5}{{.3}^3}.7.673}}.\frac{{2017.2018 - 2}}{{2018.20172017}}\\
\Leftrightarrow M = \frac{{2018.10001.2017}}{{\left( {{2^5}{{.3}^2}.7} \right).\left( {3.673} \right)}}.\frac{{\left( {2016 + 1} \right)\left( {2019 - 1} \right) - 2}}{{2018.2017.10001}}\\
\Leftrightarrow M = \frac{{\left( {2016 + 1} \right)\left( {2019 - 1} \right) - 2}}{{\left( {{2^5}{{.3}^2}.7} \right)\left( {3.673} \right)}} = \frac{{2016.2019 + 2019 - 2016 - 1 - 2}}{{2016.2019}} = \frac{{2016.2019}}{{2016.2019}} = 1
\end{array}\]\
