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![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{1}{2022}\) \(\times\) \(\dfrac{2}{5}\) + \(\dfrac{1}{2022}\) \(\times\) \(\dfrac{7}{5}\) - \(\dfrac{1}{2022}\) \(\times\) \(\dfrac{8}{10}\)
= \(\dfrac{1}{2022}\) \(\times\) ( \(\dfrac{2}{5}\) + \(\dfrac{7}{5}\) - \(\dfrac{8}{10}\))
= \(\dfrac{1}{2022}\) \(\times\) ( \(\dfrac{9}{5}\) - \(\dfrac{4}{5}\))
= \(\dfrac{1}{2022}\) \(\times\) \(\dfrac{5}{5}\)
= \(\dfrac{1}{2022}\times1\)
= \(\dfrac{1}{2022}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{14}{9}-\dfrac{1}{6}-\dfrac{1}{3}-\dfrac{1}{2}+\dfrac{4}{9}\\ =\left(\dfrac{14}{9}+\dfrac{4}{9}\right)-\left(\dfrac{1}{2}+\dfrac{1}{3}+\dfrac{1}{6}\right)\\ =\dfrac{18}{9}-\left(\dfrac{3}{6}+\dfrac{2}{6}+\dfrac{1}{6}\right)\\ =2-\dfrac{6}{6}\\ =2-1\\ =1\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{4}{3}-x=\dfrac{2}{5}\\ x=\dfrac{4}{3}-\dfrac{2}{5}\\ x=\dfrac{14}{15}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
58 x 58 + 52 x 58 - 10
= 58 x ( 58 + 52 ) - 10
= 58 x 110 - 10
= 6380 - 10
= 6370
58x 58+52×58-10
=58x (52+58)-10
=58x110-10
=6380-10
=6370
![](https://rs.olm.vn/images/avt/0.png?1311)
=9 bn nhé
= 9 các bn k mk đi mk k lại cho