GIÚP EM VỚI Ạ NHANH Ạ A) 1-1/2 B) 1-3/10 C) 3- 1/3 D) 4- 1/9 E)8-2/3 G) 5- 2/5 A) 5/10 -2/15 B) 5/20 -1/6 C) 6/18 -6/24 D )5/9-3/12 ĐÚNG CHO 5 * 1 TIM

`a)` `1``-``1/2`

`=` `2/2` `-` `1/2`

`=` $\dfrac{2-1}{2}$

`=` `1/2`

`b)` `1``-``3/10`

`=` `10/10` `-` `3/10`

`=` $\dfrac{10-3}{10}$

 `=` `7/10`

`c)` `3``-` `1/3`

`=` `9/3` `-` `1/3`

`=` $\dfrac{9-1}{3}$

`=` `8/3`

`d)` `4``-` `1/9`

`=` `36/9` `-` `1/9`

`=` $\dfrac{36-1}{9}$

`=` `35/9` 

`e)``8``-``2/3` 

`=` `24/3` `-` `2/3`

`=` $\dfrac{24-2}{3}$

`=` `22/3` 

`g)` `5``- ``2/5`

`=` `25/5` `-` `2/5`

`=` $\dfrac{25-2}{5}$

`=` `23/5` 

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 `a)` `5/10` `-``2/15`

`=` `15/30` `-` `4/30`

`=` $\dfrac{15-4}{30}$

`=` `11/30`

`b)` `5/20` `-``1/6`

`=` `15/60` `-` `10/60`

`=` $\dfrac{15-10}{60}$

`=` `5/60`

`=` `1/12`

`c)` `6/18` `-` `6/24`

`=` `24/72` `-` `18/72`

`=` $\dfrac{24-18}{72}$

`=` `6/72`

`=` `1/12`

`d )``5/9``-``3/12` 

`=` `20/36` `-` `9/36`

`=` $\dfrac{20-9}{36}$

`=` `11/36`

`@Bluery` `gửi`

`a)`

`1-1/2`

`=2/2-1/2`

`=1/2`

$\\$

`b)`

`1-3/10`

`=10/10-3/10`

`=7/10`

$\\$

`c)`

`3-1/3`

`=9/3-1/3`

`=8/3`

$\\$

`d)`

`4-1/9`

`=36/9-1/9`

`=35/9`

$\\$

`e)`

`8-2/3`

`=24/3-2/3`

`=22/3`

$\\$

`g)`

`5-2/5`

`=25/5-2/5`

`=23/5`

$\\$

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$\\$

`a)`

`5/10-2/15`

`=15/30-4/30`

`=11/30`

$\\$

`b)`

`5/20-1/6`

`=1/4-1/6`

`=3/12-2/12`

`=1/12`

$\\$

`c)`

`6/18-6/24`

`=1/3-1/4`

`=4/12-3/12`

`=1/12`

$\\$

`d)`

`5/9-3/12`

`=5/9-1/4`

`=20/36-9/36`

`=11/36`