Question

Tính nhanh: 

\(\dfrac{7256.4275-725}{3650+4375.7255}\)

Answer 1

\(=\)\(\dfrac{\left(7256+1\right).4275-725}{3650+4375.7255}\)

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

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

\(=1\)

Answer 2

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

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

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

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

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

\(=1\)