Từ biểu thức, ta suy ra:

85.35-85.27-35.85+35.27

=27(35-85)

=27.-50

=-1350

\(85.\left(35-27\right)-35.\left(85-27\right)\)

\(=85.8-35.58\)

\(=680-2030\)

\(=-1350\)

Chúc bạn học tốt~~~

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

=(85.35-35.85)+(85.27-35.27)=0+27.(85-35)=27.40=1080

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

=85.35-85.27-35.85+35.27

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

=0+27.(85-35)=27.40=1080

tick nhé

hình như bằng 0

hok tốt

85.[35-27]-35.[85-27]

=85.35-85.27-35.85+35.27

=85.27+35.27

=27(85+35)

=27.120

=3240

a)85.(35-27)-35.(85-27)

=85.35-27-35.85-27

=(85-85).(35-35).(27-27)

=0.0.0

=0

b)47.(45-15)-47.(45+15)

=47.45-15-47.45+15

=(47-47).(45-45).(15+15)

=0.0.30

=0

a) - 1350

b) - 141o

21.35-3.25.7

= 21.35-21.25

= 21.(35-25)

= 21. 10

=210

77 - 11.( 30+7)

= 11.7 -11.30 -11.7

= 11.7-11.7 -11.30

= -11.30

= -330

21.35-3.25.7=210

77-11(30+7)=-330

85(35-27)-35(85-27)=-1350

47(45-15)-47(45+15)=-2820

29.(85-47)+85.(47-29)

=29.85 - 29.47 + 85.47 -85.29

=29.(85-85) + 47.(85-29)

=2632

29.(85-47)+85.(47-29)

=29.85 - 29.47 + 85.47 - 85.29

=29.(85-85) + 47.(85-29)

=0+2520

=2520

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

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

a, 85.(35-27)-35.(85-27)

=85.35-85.27-35.85+35.27

=85.27+35.27

=27.(85+35)

=27.120=3240

b, 47.(45-15)-47.(45+15)

=47.30-47.60

=47.(30-60)

=-1410

thanks!

85 . ( 35 - 47) - 35 . ( 85 - 27)

= 85 . ( -12) - 35 . 58

= -1020 - 2030

= -3050

\(85.35-85.47-35.85+35.27=35.27-85.47=-3050\)