Question

tính hợp lý

85(35-27)-35(85-27)

 

Answer 1

85(35-27)-35(85-27)=85.35-85.27-35.85+35.27

=(85.35-35.85)+(35.27-85.27)

=0+27.(35-85)

=27.(-40)

=-1080

Answer 2

85(35-27)-35(85-27)

= 85.35-85.27-35.85-35.27

=(85.35-35.85)+(35.27-85.27)

=0+27.(35-85)

=27.(-40)

= 1080