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

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 

\(\frac{7256\cdot4375-725}{3650+4375\cdot7255}=\frac{\left(7255+1\right)\cdot4375-725}{3650+4375\cdot7255}\)

\(=\frac{7255\cdot4375+4375-725}{3650+4375\cdot7255}=\frac{7255\cdot4375+3650}{3650+4375\cdot7255}\)

\(\frac{7255\cdot4375+3650}{7255\cdot4375+3650}=1\)

=(7255+1)x4375-725 / 3650+4375x7255

=4375x7255+4375-725 / 3650+4375x7255

=4375x7255+3650 / 4375x7255+3650

=1