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Quy luật:
00*00=0*0*0*0=0
11*11=1*1*1*1=1
22*22=2*2*2*2=16
33*33=3*3*3*3=81
44*44=4*4*4*4=256
=> 99*99=9*9*9*9=6561
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{1}{3}\) + \(x\) = \(\dfrac{11}{12}\)
\(x\) = \(\dfrac{11}{12}\) - \(\dfrac{1}{3}\)
\(x\) = \(\dfrac{7}{12}\)
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a)\(x:\frac{9}{22}=44\) b)\(x:\frac{5}{11}=33\) c)\(x:\frac{4}{33}=22\)
\(x\) \(=44\times\frac{9}{22}\) \(x\) \(=33\times\frac{5}{11}\) \(x\) \(=22\times\frac{4}{33}\)
\(x\) \(=18\) \(x\) \(=15\) \(x\) \(=\frac{8}{3}\)
A) X : 9/22 = 44
X=44x9/22
X=18
B) X : 5/11 = 33
X=33x5/11
X=15
C) X : 4/33 = 22
X=22x4/33
X=8/3
![](https://rs.olm.vn/images/avt/0.png?1311)
4 x 3 = 12 3 x 4 = 12 12 : 4 = 3 12 : 3 = 4 3 x 1 = 3 3 : 3 = 1 3 :1 = 3 0 : 3 = 0
4 x 3 = 12
3 x 4 = 12
12 :4 = 3
12 : 3=4
3 x 1 =3
3 : 3 =1
0 :3 = 0
Hok tốt