(-10 $\frac{1}{5}$ – 5 $\frac{3}{4}$ ) – ( $\frac{1}{4}$ – 0,2) 05/10/2021 Bởi Maria (-10 $\frac{1}{5}$ – 5 $\frac{3}{4}$ ) – ( $\frac{1}{4}$ – 0,2)
\[\begin{array}{l} \left( { – 10\frac{1}{5} – 5\frac{3}{4}} \right) – \left( {\frac{1}{4} – 0,2} \right)\\ = \left( { – \frac{{51}}{5} – \frac{{23}}{4}} \right) – \left( {\frac{1}{4} – \frac{1}{5}} \right)\\ = – \frac{{319}}{{20}} – \frac{1}{{20}}\\ = – \frac{{320}}{{20}} = – 16. \end{array}\] Bình luận
$$\eqalign{ & \left( { – 10{1 \over 5} – 5{3 \over 4}} \right) – \left( {{1 \over 4} – 0,2} \right) \cr & = \left( { – 15{{19} \over {20}}} \right) – \left( {{1 \over 4} – {1 \over 5}} \right) \cr & = – {{15.20 + 19} \over {20}} – {1 \over {20}} \cr & = {{ – 319} \over {20}} – {1 \over {20}} = – {{320} \over {20}} = – 16 \cr} $$ Bình luận
\[\begin{array}{l}
\left( { – 10\frac{1}{5} – 5\frac{3}{4}} \right) – \left( {\frac{1}{4} – 0,2} \right)\\
= \left( { – \frac{{51}}{5} – \frac{{23}}{4}} \right) – \left( {\frac{1}{4} – \frac{1}{5}} \right)\\
= – \frac{{319}}{{20}} – \frac{1}{{20}}\\
= – \frac{{320}}{{20}} = – 16.
\end{array}\]
$$\eqalign{
& \left( { – 10{1 \over 5} – 5{3 \over 4}} \right) – \left( {{1 \over 4} – 0,2} \right) \cr
& = \left( { – 15{{19} \over {20}}} \right) – \left( {{1 \over 4} – {1 \over 5}} \right) \cr
& = – {{15.20 + 19} \over {20}} – {1 \over {20}} \cr
& = {{ – 319} \over {20}} – {1 \over {20}} = – {{320} \over {20}} = – 16 \cr} $$