\(\dfrac{7256.4375-725}{3650+4375.7255}\)

\(=\dfrac{\left(7255+1\right).4375-725}{3650+4375.7255}\)

\(=\dfrac{7255.4375+1.4375-725}{3650+4375.7255}\)

\(=\dfrac{7255.4375+3650}{3650+4375.7255}=1\)

\(\dfrac{7256.4375-725}{3650+4375.7255}=\dfrac{\left(7255+1\right).4375-725}{3650+4375.7255}\)

\(=\dfrac{7255.4375+4375-725}{3650+4372.7255}=\dfrac{7255.4375+3650}{3650+4375.7255}=1\)

7256*4375-725/3650+4375*7255

= 7256 * 4375 + 4375 * 7255 - 29/146

= 4375* ( 7256+7256) -29/146

= 4375* 14512 -29/146

= 63490000- 29/146

bạn bị phê ơi kết bạn nhé phê

cu da cẩng

7256 x 4375 - 725

= 31745000 - 725

= 31744275

3650 + 4375 x 7255

= 3650 + 31740625

= 31744275

#)Giải :

\(\frac{7256.4375-725}{3650+4375.7255}=\frac{\left(7255+1\right)4375-725}{3650+4375.7255}=\frac{7255.4375+4375.1-725}{3650+4375.7255}=\frac{7255.4375+3650}{3650+4375.7255}=1\)

7256x4375-752

=31745000-752

=31744275

3650+4375x7255

=3650+31740625

=31744275

minh chua giai duoc ban giai duoc chua

7256 * 4375 - 725 = 31745000 - 725 = 31744275

3650 + 4375 * 7255 = 3650 + 31740625 =  31744275

OK

b) ( 7256 . 4375 - 725 ) : ( 3650 + 4375 . 7255 )

= ( 31745000 - 725 ) : ( 3650 + 31740625 )

= 31744275 : 31744275

=1

sorry  câu đó là câu a