\(\dfrac{36}{24}\)=\(\dfrac{36:}{24}\)
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![](https://rs.olm.vn/images/avt/0.png?1311)
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=(11/24 + 13/24) + (-5/41 - 36/41) + 0.5
= 1 + (-1) + 0.5
= 0 + 0.5
= 0.5
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{36}{x^6}-\dfrac{24}{x^3}+4=\left(\dfrac{6}{x^3}\right)^2-2.\dfrac{6}{x^3}.2+2^2=\left(\dfrac{6}{x^3}-2\right)^2=4\left(\dfrac{3}{x^3}-1\right)\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a: \(\Leftrightarrow\dfrac{16}{x}=\dfrac{-4}{5}\)
hay x=-20
b: =>x+7=-10
hay x=-17
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{15}{25}=\dfrac{15:5}{25:5}=\dfrac{3}{5}\\ \dfrac{24}{28}=\dfrac{24:4}{28:4}=\dfrac{6}{7}\\ \dfrac{18}{33}=\dfrac{18:3}{33:3}=\dfrac{6}{11}\\ \dfrac{12}{36}=\dfrac{12:12}{36:12}=\dfrac{1}{3}.\)
![](https://rs.olm.vn/images/avt/0.png?1311)
`(5/6 -x+7/12) : ( 11/24 -1/8)=11/36`
`=>(5/6 -x+7/12) : (11/24 - 3/24)=11/36`
`=>(5/6 -x+7/12) : 8=11/36`
`=>5/6 -x+7/12=11/36 xx 8`
`=>5/6 -x+7/12=22/9`
`=> x+7/12=5/6-22/9`
`=> x+7/12=-29/18`
`=>x=-29/18 -7/12`
`=>x=-79/36`
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