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

phá ngoặc ra nha bạn

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

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

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

= 85 . 35 - 85 . 27 - 35 . 85 + 35 . 27

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

= 0 - 27 . 50

= 0 - 1350

= -1350

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

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

= 47 . (-30)

= -1410

Học tốt !!!

=))

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

Bằng 0 thì mình ở nhà học cái gì nữa :] 

mà cảm ơn bạn wattif nhé

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

= 85.8 - 35.58 

=680.2030

=-1350

=-1350
Tick nha Quan Nguyệt Ánh
 

= 85.8-35.58

= 680-2030

= -1350

85.8-35.58

=680-2030

=-1350

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

= 85 . ( -12) - 35 . 58

= -1020 - 2030

= -3050

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

dễ thế -3050 . tick mình nhé . chúc bạn học tốt

a,
       85.(35-27)-35.(85-27)
     =85.35-85.27-35.85-35.27
     =85.35-35.85-85.27.35.27
     =85.27-35.27
     =(85-35).27
     =100.27/2
     =2700/2
     =1350