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![](https://rs.olm.vn/images/avt/0.png?1311)
Cac cap p/s bang nhau la:\(\frac{2}{3}=\frac{-6}{-9};\frac{3}{-9}=\frac{2}{-6};\frac{2}{-9}=\frac{-6}{27}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a ) 3 2 = 9 6 ; 2 3 = 6 9 ; 3 9 = 2 6 ; 9 3 = 6 2 .
b ) − 5 3 = 10 − 6 ; 3 − 5 = − 6 10 ; − 5 10 = 3 − 6 ; 10 − 5 = − 6 3
![](https://rs.olm.vn/images/avt/0.png?1311)
a ) 3 2 = 12 8 ; 2 − 3 = 8 12 ; 3 12 = 2 8 ; 12 3 = 8 2
b ) − 2 4 = 5 − 10 ; 4 − 2 = − 10 5 ; − 2 5 = 4 − 10 ; 5 − 2 = − 10 4
![](https://rs.olm.vn/images/avt/0.png?1311)
a ) 2 1 = 8 4 ; 1 2 = 4 8 ; 2 8 = 1 4 ; 8 2 = 4 1 .
b ) − 4 3 = − 8 6 ; − 4 − 8 = 3 6 ; 3 − 4 = 6 − 8 ; − 8 − 4 = 6 3
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(\dfrac{-12}{16}=\dfrac{-15}{20}=\dfrac{-18}{24}=\dfrac{-21}{28}=\dfrac{-24}{32}=\dfrac{-27}{36}=\dfrac{-30}{40}=\dfrac{-33}{44}=\dfrac{-36}{48}=\dfrac{-39}{52}\)
\(=\dfrac{-42}{56}=\dfrac{-45}{60}=\dfrac{-48}{64}=\dfrac{-51}{68}=\dfrac{-54}{72}=\dfrac{-57}{76}=\dfrac{-60}{80}=\dfrac{-63}{84}=\dfrac{-66}{88}=\dfrac{-69}{92}\)
\(=\dfrac{-72}{96}=\dfrac{-75}{100}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
-9/27; 3/-6,
2/3;-6/-9,
Mình chỉ biết thế thôi