Đáp án:

Giải thích các bước giải: \(\begin{array}{*{20}{l}}{\frac{{13}}{{38}}{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} va{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \frac{{ - 12}}{{ - 37}}}\\{Ta{\mkern 1mu} co:{\mkern 1mu} }\\{\frac{{ - 12}}{{ - 37}} = \frac{{12}}{{37}} \frac{{13}}{{39}} = \frac{1}{3}{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \left( 2 \right)}\\{Tu{\mkern 1mu} {\mkern 1mu} \left( 1 \right){\mkern 1mu} {\mkern 1mu} {\mkern 1mu} va{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \left( 2 \right) \Rightarrow \frac{{ - 12}}{{ - 37}}

13/38>-12/38

-12/37