Ta có: 23. [(12.X+39):3] = 4623

⇒(12.X+39):3 = 201

⇒12.X+39 = 603

⇒12.X = 564

⇒X = 47

`@` `\text {Ans}`

`\downarrow`

`2000 - 40 \times 27 - 40 \times 23`

`= 2000 - 40 \times (27 + 23)`

`= 2000 - 40 \times 50`

`= 40 \times 50 - 40 \times 50`

`=0`

\(2000-40x27-40x23\)

\(=40x50-\left(40x27+40x23\right)\)

\(=40x50-\left[40x\left(27+23\right)\right]\)

\(=40x50-40x50=0\)

$2000-40\times 27-40\times 23$

$=2000-40\times (27+23)$

$=2000-40\times 50$

$=40\times 50-40\times 50$

$=0$

23 * [ ( 12 * x + 39 ) : 3 ] = 23 + 40 * 115

23 x [ ( 12 x x + 39 ) : 3 ] = 4623

( 12 x x + 39 ) : 3 = 4623 : 23

( 12 x x + 39 ) : 3 = 201 

12 x x + 39 = 201 x 3 

12 x x + 39 = 603

12 x x = 603 - 39 

12 x x = 564

x = 564 : 12 

x = 47

k mik nha các bn

=838 nha bn

40+30+50+70+8+65+12+30+40+10+483=838

16583

`(23+x)/(40+x)=3/4(x ne -40)`

`=>4(23+x)=3(40+x)`

`=>92+4x=120+3x`

`=>4x-3x=120-92`

`=>x=28`

Vậy `x=28`

\(\dfrac{23+x}{40+x}=\dfrac{3}{4}\) 

\(\Rightarrow4.\left(23+x\right)=3.\left(40+x\right)\) 

         \(92+4x=120+3x\) 

         \(4x-3x=120-92\) 

                 \(1x=28\) 

                   \(x=28:1\) 

                   \(x=28\)

28

ai giải được cho thiên tài

47 bạn nhé nhớ

Ta có: 23. [(12.X+39):3] = 4623

\(\Rightarrow\)(12.X+39):3 = 201

\(\Rightarrow\)12.X+39 = 603

\(\Rightarrow\)12.X = 564

\(\Rightarrow\)X = 47

Lê Hoàng Khả Nhi

a, x.0 = 0 

=> x   = 0 

b, 23( x -4) = 23 

=>      x -4  = 23/23

=>      x -4  = 1 

=>      x       = 1 + 4 

=>      x        = 5 

c, 12x + 40 = 76 

=> 12x        = 76 -40

=> 12x        = 36 

=>     x         = 36/12

=>     x          = 3 

a) \(x.0=0\)

\(=>x\)có vô số nghiệm

b) \(23\left(x-4\right)=23\)

\(23x-92=23\)

\(23x=115\)

\(x=5\)

vậy \(x=5\)

c) \(12x+40=76\)

\(12x=36\)

\(x=3\)

vậy \(x=3\)

a) x.0=0

=> x \(\varepsilon\)N

b) 23(x-4)=23

         x-4  = 23-23

         x-4   =0

         x      = 0+4

         x      = 4

c) 12x +40=76

     12x      = 76-40

      12x      = 36

          x       = 36:12

          x       = 3

      Ung ho mk nha cac bn!

23+x/40+x=3/4

=>x/40+x=3/4-23=-89/4

=>x/40+40x/40=-89/4

=>(x+40x)/40=-89/4

=>50x/40=-89/4

=>50x=-89/4.40=-890

=>x=-17,8

k cho mk nha pn!!!!!