1919/2323x464646/747474x37/19

=19/23x46/74x37/19

=\(\frac{19.46.37}{23.74.19}=\frac{1.2.1}{1.2.1}=1\)

(33/12+87/12)+(21/15-2/5)

=10+(7/5-2/5)

=10+1=11

1919/2323*464646/747474*37/19=1

33/12+21,15-2/5+87/12=11 pn nha

nếu đúng tk cho mk nha

19/23*23/37*37/19=1

tôi thách cả bố ban\(\frac{2+5+\frac{525}{5\cdot25\cdot5-45-5-56+2+5\cdot5\cdot54-4\cdot\frac{4}{5\cdot5-5-45-45-4-4\cdot5\cdot\frac{45}{\frac{4}{5\cdot5-\cdot4\cdot4-4-4\cdot-5\cdot\frac{4}{4}}}}}}{ }\)

bằng 1 con ngu tao làm được thì sao

19.9+9.(37+43)+9

=19.9+9.80+9

=9.(19+80+1)

=9.100

=900

`#Ya`

`= 19 × 9 + 9 × 80 + 9 × 1`

`= 9 × ( 19 + 80 + 1 )`

`= 9 × 100= 900`

`19xx9+9xx(37+43)+9`

`=9xx(19+37+43+1)`

`=9xx100=900`

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

 = 19/37 - 19/37 + 1

= 0/37 + 1

= 0/37 + 37/37

=1

1 + 19/37 - 19/37

1 + 0 = 1

37 x 25 + 37 x 35 + 37x 39 +  37

= 37x ( 25+ 35+ 39 + 1)

= 37 x 100

= 3700

2364 x 37 + 2364 x 63  = 2364 × (37 + 63)

= 2364 × 100

= 236400

135 x 37 + 135 +  62 x 135

= 135 x 37 + 135 x 1 +  62 x 135

= 135 x ( 37 + 1 + 62)

 = 135 x 100

= 13500

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