19/23 x 23/37 x 37/19

= 37/27

\(\dfrac{1919}{2323}\times\dfrac{464646}{747474}\times\dfrac{37}{19}\)

\(=\)\(\dfrac{1919:101}{2323:101}\times\dfrac{464646:10101}{747474:10101}\times\dfrac{37}{19}\)

\(=\dfrac{19}{23}\times\dfrac{46}{74}\times\dfrac{37}{19}\)

\(=\dfrac{19\times23\times2\times37}{23\times2\times37\times19}=1\)

= 19/23 x 23/37 x 37/19

= 19/37 x 37/19

= 1

\(=\dfrac{19}{23}\times\dfrac{23}{37}\times\dfrac{37}{19}=1\)

=19/23x46/74x37/19

=1

= 1 nha

= 1 nha

HT :)))

Bằng 1 nha !

ta có:

= 19/23 x 23/37 x 37/19

= 19 x 23 x 37 / 23 x 37 x 19

= 1

chúc bạn học tốt có bài khó hỏi mình

bằng 111111111111111111111

\(\frac{1919}{2323}\cdot\frac{464646}{747474}\cdot\frac{37}{19}=1\)

\(\frac{1919}{2323}\times\frac{464646}{747474}\times\frac{37}{19}=\frac{19}{23}\times\frac{46}{74}\times\frac{37}{19}\)

                                         \(=\frac{19\times23\times2\times37}{23\times37\times2\times19}\)

                                         \(=1\)

câu 1 

5m vuông 8dm vuông = 508 dm vuông 

câu 3 

1919:2323*464646:747474*37:19

(1919:19)*46*10101:74*10101*37:23*101

=(101*101)*(46*74)*(10101:10101)*37 :23

=10201*3404*1*37 :23

=10201*(3404:23)

10201*148 

=1509748

=1919:101/2323x464646:10101/747474:10101x37/19=19/23x46/74x37/19=2/2=1

\(\frac{1919}{2323}.\frac{464646}{747474}.\frac{37}{19}\)

\(=\frac{19}{23}.\frac{46}{74}.\frac{37}{19}\)

\(=\frac{19.46.37}{23.74.19}\)

Sao khi giản ước, ta có:

\(=\frac{1702}{1702}=1\)

Nhớ ấn đúng cho mình nhé! 

kp nhé cỏ