Question

cho A=137.454+206

      B=453.138-110

biến đổi B để B=A

Answer 1

Ta có:

\(A=137.454+206=137\left(454-1\right)+206\)

\(=137.453+137+206=\left(138-1\right).453+343\)

\(=138.453-453+343=138.453-110=B\)

Answer 2

A=137.454+206

B=453.138-110

=>B=(454-1).(137+1)-110

=>B=137.454+454-(137+110+1)

=>B=137.454+206=A

Vậy B=A