47.(23+50)-23.(47-50)=

47.73-23.-3 =

1081-23.-3 =

1058-3 =

1055

47.(23+50)-23.(47-50)

=(47.73)-23.(-3)

=3431-(-69)

=3431+69

=3500

dễ vồn ..

    bằng 1200 bạn ak .. check mk nhé
 

47 x (23+50)-23x(47+50)

=47 x 73 - 23 x 97

=(97-47)x(73-23)

=50 x 50

=2500

 mình sai rùi!!!

ủng hộ nha

Cam on cau tra loi cua cac ban. Ai biet cach lam nho giup minh nhe,minh se h cho

a) 29.(85-47)+85.(47-29)= 29.85-29.47+85.47-85.29
                                   =(29.85-85.29) -29.47+85.47
                                   =0-29.47+85.47
                                   = -29.47+85.47
                                   = (-29+85).47
                                   =56.47
                                   = 2632     
b)47.(23+50)-23.(47+50)= 47.23+47.50-23.47+23.50
                                  =(47.23-23.47)+47.50+23.50
                                  =0+47.50+23.50
                                  =47.50+23.50       
                                  =(47+23).50
                                  =70.50
                                  =3500
tích ^.^ ~

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

=29.38+85.18

=1102+1520

=2622

b)47.(23+50)-23.(47+50)

=47.73-23.97

=3431-2231

=1200

k mình nha...^_^...kb nữa... thanks

47x(23+50)-23x(47+50)

=47x23+47x50-23x47-23x50

=47x(23-23)-50x(47-23)

=47x0-50x24

=0-1200

=-1200

47 x(23 +50 )-23 x(47 +50)

=47x 23 +  47 x50 -23 x47 +23 x50

=0     

47.(23+50)-23.(47+50)

=47.23+47.50-23.47+23.50

=(47.23-23.47)+47.50+23.50

=(47.23-23.47)+(47+23).50

=0+70.50

=0+3500=3500.

47.(23+50)-23.(47+50)

=47.23+47.50-23.47-23.50

=47.50-23.50

=50.(47-23)

=50.24=1200

47.(23+50)-23.(47+50)

= 47.23+47.50-23.47+23.50

= 47.50-23.50

= 50.(47-23)

=50.24

=5024

chúc bạn học tốt nhé

\(47.\left(23+50\right)-23.\left(47+50\right)\)

\(=47.73-23.97\)

\(=3431-2231\)

\(=1200\)

\(47\left(23+50\right)-23\left(47+50\right)=47.23+47.50-23.47-23.50=50\left(47-23\right)=1200\)

\(85\left(35-47\right)-35\left(85-27\right)=85.35-85.47-85.35+35.27=35.27-85.47=-3050\)

bn ko có máy tính cầm tay à

nguyen son dong minh ko bk trinh bay ban nhé

  47.(23 + 50 ) - 23.( 47 + 50)

= 47.  23 + 47.50 - 23.47 + 23.50

= ( 47.23 - 23.47 ) +47.50 + 23.50

= 0 + 47.50 + 23.50

= 50. ( 47 + 23 )

= 50.70

= 3500

hok tốt