a : 4 :3 =468 . a : 6 =
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a:3:4=468
a:(3x4)=468
a:12=468
a =468x12
a =5616
vậy 5616:6=936
A : 4 : 3 = 468
A = 468 x 3 x 4
A = 5616
Vậy: A : 6 = 5616 : 6 = 936
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a) \(\dfrac{4}{6}+\dfrac{7}{13}+\dfrac{17}{9}-\dfrac{8}{9}+\dfrac{14}{6}+\dfrac{19}{13}\)
\(=\dfrac{2}{3}+\dfrac{7}{13}+\dfrac{17}{9}-\dfrac{8}{9}+\dfrac{7}{3}+\dfrac{19}{13}\)
\(=\left(\dfrac{2}{3}+\dfrac{7}{3}\right)+\left(\dfrac{7}{13}+\dfrac{19}{13}\right)+\left(\dfrac{17}{9}-\dfrac{8}{9}\right)\)
\(=\dfrac{9}{3}+\dfrac{26}{13}+\dfrac{9}{9}\)
\(=3+2+1\)
\(=6\)
b) \(\dfrac{328}{435}\times\dfrac{468}{432}\times\dfrac{435}{164}\times\dfrac{432}{984}\times\dfrac{164}{468}\)
\(=\dfrac{328\times468\times435\times432\times164}{435\times432\times164\times984\times468}\)
\(=\dfrac{328}{984}\)
\(=\dfrac{1}{3}\)
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\(a,468:6+51\times2\\ =78+102\\ =180\\ b,\left(15\times24\right):4\\ =360:4\\ =90\)
\(a,468:6+51\times2=78+102=180\)
\(b,\left(15\times24\right):4=360:4=90\)
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a : 4 : 3 = 468
=> a : 4 = 468 x 3
=> a : 4 = 1404
=> a = 1404 x 4
=> a = 5616
Chúc bạn học tốt nha !!!
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a) 570 - 225 - 167 + 67
= 345 - 167 + 67 = 178 + 67 = 245
168 x 2 : 6 x 4 = 336 : 6 x 4 = 56 x 4 = 224
b) 468 : 6 + 61 x 2 = 78 + 122 = 200
5625 - 5000 : (726 : 6 - 113)
= 5000 - 5000 : (121 - 21)
= 5000 - 5000 : 100 = 5000 - 50 = 4950
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570-225-167+67=345-167+67
=178+67=245
168x2:6x4=336:6x4=56x4=224
b)468:6+61x2=78+61x2=78+122=200
5625-5000:(726:6-113)=5625-5000:8=5625-625=5000
tick cho minh nha