a: Ta có: 24+35+76+65+22

=(24+76)+(35+65)+22

=222

b: Sửa đề: \(24\cdot35+24\cdot65\)

=24x100

=2400

x=8754532

180 - 23x + 115 = 65

-23x = 65 - 115 - 180

-23x = -230

x=10

a) \(180-23\left(x-5\right)=65\)

\(23x-115=180-65\)

\(23x-115=115\)

\(23x=230\)

\(x=10\)

vay \(x=10\)

k mk nha ban

23(x-5)=115

x-5=5

x=10

x - 23 = 80 - 65

x - 23 = 15

x = 15 + 23

x = 38

Vậy x = 38

x -23=15

x= 15+23

x= 38

x-23=80-65

x-23=15

x=15+23

x=38

− 6 5 − 2 3 − − 7 15 ≤ x ≤ 1 10 + 4 5 − − 7 10 − 18 15 + − 10 15 + 7 15 ≤ x ≤ 1 10 + 8 10 + 7 10 − 7 5 ≤ x ≤ 16 10 ⇒ x = − 1 ; 0 ; 1

còn cái nịt

*,  2xX-(23+x)=65

=>2x-23-x=65

=>x-23=65

=>x=65+23

=>x=88

*,4xX-5=3xX+15

=>4x-5=3x+15

=>4x-3x=15+5

=>x=20

nhận đúng cho mk nha

a) x = 51 - 12 

    x = 39

b) x = 65 - 23 

   x = 42

x=51-12=39

x=65-23=42

Tìm \(x\):

a) \(x+12=51\)

\(x=51-12\)

\(x=39\)

b) \(65-x=23\)

\(x=65-23\)

\(x=42\)

Tính nhanh :

165 x 23 - 65 x 23

= 23 x ( 165 - 65 )

= 23 x 100

= 2300                    

136 + 63 + 100

= 199 + 100

= 299                     

165 -20 - 65

= ( 165 - 65 ) - 20

= 100 - 20

= 80

165 x 23 - 65 x 23 = ( 165 - 65 ) x 23 = 100 x 23 = 2300

136 + 63 + 100 = 199 + 100 = 299

165 - 20 - 65 = 165 - 65 - 20 = 100 - 20 = 80

165 x 23 - 65 x 23 

= ( 165 - 65 ) x 23

= 100 x 23

= 2300

      136 + 63 + 100

    = 199 + 100

    = 299

165 - 20 - 65

= ( 165 - 65 ) - 20

= 100 - 20 

= 80

              ~~~ Hok tốt~~~