Ta có:

A=1212x4747=12x101x47x10101

B=4747x121212=47x101x12x10101

Ta thấy mỗi thừa số ở A và B đều giống nhau

Vậy A=B

\(\dfrac{373737}{474747}+\dfrac{5757}{4747}\) 

\(\left(=\dfrac{373737:10101}{474747:10101}+\dfrac{5757:101}{4747:101}\right)\)

\(=\dfrac{37}{47}+\dfrac{57}{47}=\dfrac{37+57}{47}=\dfrac{94}{47}=2\)

toán lớp 5 nâng cao  à?

\(=\dfrac{373737:10101}{474747:10101}+\dfrac{5757:101}{4747:101}=\dfrac{37+57}{47}\)

\(=2\)

Số kiểu này thì sao mà làm được bạn

A=37/47+57/47

A=94/47
 

A = 373737/474747 + 5757/4747

A = 379494/479494

A = 2

thank

373737:474747+5757:4747

=37/47                +   57/47

=      94/47

\(=\frac{373737}{474747}+\frac{5757}{4747}\)

\(=\frac{37}{47}+\frac{57}{47}\)

\(=\frac{94}{47}\)

\(373737\div474747+5757\div4747\)

\(=\frac{373737}{474747}+\frac{5757}{4747}\)

\(=\frac{373737\div10101}{474747\div10101}+\frac{5757\div101}{4747\div101}\)

\(=\frac{37}{47}+\frac{57}{47}\)

\(=\frac{94}{47}=2\)

Học tốt~

\(\frac{373737}{474747}+\frac{5757}{4747}\)

\(=\frac{373737\div10101}{474747\div10101}+\frac{5757\div101}{4747\div101}\)

\(=\frac{37}{47}+\frac{57}{47}\)

\(=\frac{94}{47}\)\(=2\)

Học tốt~

 373737 / 474747+ 5757 / 4747

=37/47                +   57/47

=      94/47

ta có:

\(\frac{373737}{474747}=\frac{37}{47}\)

\(\frac{5757}{4747}=\frac{57}{47}\)

=>\(\frac{37}{47}+\frac{57}{47}\)

\(=\frac{94}{47}\)

232323 . 474747 - 4747 . 232323

= 232323 . ( 474747 - 4747 )

= 232323 . 470000

= 109191810000

232323*474747-4747*232323

=232323*(474747-4747)

=232323*470000

=109191810000

tick đúng cho mik đi bạn

232323.474747-4747.232323

=232323.(474747-4747)

=232323.470000

=109191810000

\(\frac{3737}{4747}+\frac{575757}{474747}=\frac{37.101}{47.101}+\frac{57.10101}{47.10101}=\frac{37}{47}+\frac{57}{47}=\frac{37+57}{47}=\frac{94}{47}=2\)

 373737 /474747 + 5757 / 4747

=\(\left(37\cdot10101\right):\left(47\cdot10101\right)\left(57\cdot101\right):\left(47\cdot101\right)\)

\(\left(37-47\right)\cdot10101+\left(57-47\right)\cdot101\)