d) 12x 156 - 12 x 55 - 12

= 12 x ( 156 - 55 - 12 )

= 12 x 100

= 1200

e ) 12 x 11 + 21 x 11 + 11 x 33

= ( 12+ 21 + 33) x 12

= 66 x 11

= 726

g) 132 x 11 - 11 x 32 - 54 x 11

= ( 132 - 32 - 54 ) x 11

= 46 x 11

= 506

d) 12 x 156 - 12 x 55 - 12 = 12x(156 - 55 - 1 ) = 12 x 100 = 1200

e) 12 x 11 + 21 x 11 + 11 x 33 = 11  x ( 12 + 21 + 33 ) = 11  x 66 = 726

g) 132 x 11 - 11 x 32 - 54 x 11 = 11 x ( 132 - 32 - 54 ) = 11 x 46 = 506

d) \(12\times156-12\times55-12\) \(=12\times\left(156-55-1\right)\)

                                                         \(=12\times100=1200\)

e) \(12\times11+21\times11+11\times33\)\(=11\times\left(12+21+33\right)=11\times66=726\)

g) \(132\times11-11\times32-54\times11\) \(=11\times\left(132-32-54\right)=11\times46=506\)

x: 11 = 54

x=54x11

x=594

x:11=54

 x    =54x11

x     =594

                            có thắc j thì hỏi mik nha

x : 11 = 54

x        = 54 x 11

x        = 594

=>23x-11x-3x=54

=>9x=54

hay x=6

=>23x-11x-3x=54

 x=6

\(a,123\times54+27\times123-12\times123+123\times31\)

\(=123\times\left(54+27-12+31\right)\)

\(=123\times100\)

\(=12300\)

\(b,\dfrac{121}{27}\times\dfrac{54}{11}< n< \dfrac{100}{21}:\dfrac{25}{126}\)

\(22< n< \dfrac{100}{21}\times\dfrac{126}{25}\)

\(22< n< 24\)

Vì \(23>22\) và \(23< 24\) nên \(n=23\)

a, 123x(54+27-12+31)

=123x100

=12300

a123x54+27x123-12x123+123x31

=123:54+27:123-12:123+123:31

=6642+27:123-12:123+123:31

=6642+3321-12:123+123:31

=6642+3321-1476+123:31

=6642+3321-1476+3813

=12300

b,121/27x54/11<n>100/21:25/126

=22<n>24

n=23

\(x+54=11\)

\(x=11-54\)

\(x=-43\)

k mk nha

x + 54 + 26 = 92 - 11

x + 80         = 81

x                 = 81 - 80

x                 = 1

Chúc bạn học tốt!

x = 1 

nhớ k mk bạn nhé

x + 54 + 26 = 92 - 11

x + 80 = 81

x = 81 - 80

x = 1

K mk nha

72-3.(x-11)=54

3.(x-11)=72-54

3.(x-11)=18

x-11=18:3

x-11=6

x=11+6

x=17

72 - 3 . (x - 11) = 54

      3 . (x - 11) = 72 - 54

     3  . (x - 11) = 18

           x - 11 = 18 : 3

           x - 11 = 6

                 x = 6 + 11

                x = 17

chúc bạn hok tốt

Tinh nhanh :

a) 54 x 11 =594

b) 54 x 101 =5454

c) 675 x 1001 =675675

a) 54 x 11 =594

b) 54 x 101 =5454

c) 675 x 1001=675675

tks cho mk nhe