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

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

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

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

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

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

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

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

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

= 31744275 : 31744275

=1

sorry  câu đó là câu a

 155 . 155 -155 . 41 : 114

= 155( 155-41):114

=155.114:114

=155

(7256.4375 - 725)/(3650 + 4375.7255) 
= [(7255 +1).4375 - 725]/(3650 + 4375.7255) 
= [(7255.4375 + 1.4375 - 725]/(3650 + 4375.7255) 
= (7255.4375 + 3650)/(3650 + 4375.7255) = 1 

a) (155.155-155.41):114

= 155( 155-41):114

=155.114:114

=155

(7256.4375 - 725)/(3650 + 4375.7255) 
= [(7255 +1).4375 - 725]/(3650 + 4375.7255) 
= [(7255.4375 + 1.4375 - 725]/(3650 + 4375.7255) 
= (7255.4375 + 3650)/(3650 + 4375.7255) = 1 

=63489999.8