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b. \(\dfrac{4.2.3.5.2.6.2.5.3}{4.3.4.5.6.4.5.6}=\dfrac{1}{4}\)
c. \(\dfrac{17.2.101.2005}{17.2.101.2.2005}=\dfrac{1}{2}\)
d. \(\dfrac{2.3.4.2.11.13.17}{3.11.4.4.17.13.2}=\dfrac{1}{2}\)
a)\(\dfrac{4\times6\times10\times12\times15}{4\times12\times5\times24\times30}=\dfrac{2}{2\times2\times2}=\dfrac{2}{8}=\dfrac{1}{4}\)
b)\(\dfrac{34\times101\times2005}{17\times202\times4010}=\dfrac{2}{2\times2}=\dfrac{2}{4}=\dfrac{1}{2}\)
c)\(\dfrac{6\times8\times11\times13\times17}{33\times16\times17\times26}=\dfrac{6}{3\times2\times2}=\dfrac{1}{2}\)
a)12 x ( 367 + 82 ) = 82 x 12 + 12 x 367
b) ( 175 - 26 ) x 17 < 17 x 177 - 17 x 26
a)Vì 12 x ( 367 + 82 ) = 5 388;82 x 12 + 12 x 367 = 5 388
b)Vì ( 175 - 26 ) x 17 = 2 533;17 x 177 - 17 x 26 =2 567
\(x:x-54\cdot17\cdot\frac{6}{17}\cdot3\cdot4=12\)
\(x:x=12+\left(54\cdot17\cdot\frac{6}{17}\cdot3\cdot4\right)\)
x:x = ?
còn lại lm giúp mk nhá +0
1a) \(\frac{12}{17}+\frac{19}{17}+\frac{8}{17}\)
\(=\left(\frac{12}{17}+\frac{8}{17}\right)+\frac{19}{17}\)
\(=\frac{20}{17}+\frac{19}{17}\)
\(=\frac{39}{17}\)
b) \(\frac{2}{5}+\frac{7}{12}+\frac{13}{12}\)
\(=\frac{2}{5}+\frac{5}{3}\)
\(=\frac{31}{15}\)
2) \(\frac{25}{3}-x=\frac{5}{6}\)
\(x=\frac{25}{3}-\frac{5}{6}\)
\(x=\frac{45}{6}\)
ủng hộ tớ nha
$#Shả$
`A)=5/17xx(15/34+19/34)`
`=5/17xx1=5/17`
`B)=(13/12+7/12)+1/3`
`=5/3+1/3=2`
x = 77 đó bạn
Bạn nhớ **** cho mình nha !
720 : (x-17) = 12
x - 17 = 720 : 12
x - 17 = 60
x = 60 + 17
x = 77