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55x32/33x56
=11x8x5x4/11x8x3x7
=5x4/3x7
=20/21
20042004x2006/20062006x2000
=10001x2004x2006/10001x2006x2000
=2004/2000=501/500
![](https://rs.olm.vn/images/avt/0.png?1311)
a) = 1760/1848
b) số lớn quá
máy tính còn ko tính nổi
k minh nha
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\(\frac{55x32}{33x56}=\frac{11x5x2x2x8}{11x3x2x7x8}=\frac{2}{3x7}=\frac{2}{21}\)
\(\frac{20042004x2006}{20062006x2004}=\frac{10001x2004x2006}{10001x2006x2004}=1\)
#
\(\frac{55\times32}{33\times56}=\frac{5\times4}{3\times7}=\frac{20}{21}.\)
\(\frac{20042004\times2006}{20062006\times2000}=\frac{1002\times1003}{1003\times1000}=\frac{501}{500}.\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\left(\frac{20052005}{20062006}-\frac{20042004}{20052005}\right)\cdot2005\cdot2006\)
=\(\left(\frac{2005\cdot10001}{2006\cdot10001}-\frac{2004\cdot10001}{2005\cdot10001}\right)\cdot2005\cdot2006\)
=\(\frac{2005\cdot2005\cdot2006}{2006}-\frac{2004\cdot2005\cdot2006}{2005}\)
= \(2005\cdot2005-2004\cdot2006\)
=\(2005^2-\left(2005-1\right)\cdot\left(2005+1\right)\)
=\(2005^2-2005^2+1\)
=1
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có:
\(\frac{20062006}{20042004}\)
Rút gọn: \(\frac{20062006}{20042004}=\frac{2006}{2004}=\frac{1003}{1002}\)
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= - 4 020 023 < âm nha bn >
~~ tk mk đi ~~
Ai tk mk mk tk lại ~~ ^^
ai kb vs mk ik ~~ n_n
![](https://rs.olm.vn/images/avt/0.png?1311)
20042004x2006/20062006×2000 = 4008000
20042004x2006/20062006×2000 = 4008000