( 2x - 7) - (x + 135)=0

=> 2x -7 -x +135 =0

=>x +128 =0

=>x = - 128

Ta có : ( 2x - 7 ) - ( x + 135 ) = 0 

suy ra: 2x - 7 - x - 135 = 0 

suy ra: 2x - 7 - x = 135

suy ra: x(2 - 1 ) - 7 = 135

suy ra: x(2-1)= 135 + 7 = 142

suy ra:x . 1 = 142 

suy ra : x = 142 : 1 = 142

Vậy ...................................

=>2x-7=x+135=>2x-x=135+7=>x=142

chtt nha bạn tick cho mk nha

x=142

2x + 7=0-135

2x + 7=-135

2x=-135-7

2x=-142

x=-142:2

x=-71

1/2x + 3/2x=2014

x(1/2+3/2)=2014

2x=2014

x=2014:2

x=1007

a) ( 2x + 7) + 135 = 0

     2x + 7            = -135

     2x                  = -142

       x                  = -71

b) \(\frac{1}{2}x+\frac{150}{100}x=2014\)

    \(\frac{1}{2}x+\frac{3}{2}x=2014\)

     \(\left(\frac{1}{2}+\frac{3}{2}\right)x=2014\)

      \(2x=2014\)

       \(x=1007\)

k nhé bn

a/ (2x - 7) - 135 = 0

=> 2x - 7 = 0 + 135 = 135

=> 2x = 135 + 7 = 142

=> x = 142 / 2 = 71

b/ 122 + (37 - 3x) = 0

=> (37 - 3x) = 0 - 122 = -122

=> 3x = 37 - (-122) = 159

=> x = 159 / 3 = 53

\(a)\)\((2x-7)-135=0 \)

\(2x-7=0+135\)

\(2x-7=135\)

\(2x=135+7\)

\(2x=142\)

\(x=71\)

\(b) 122+(37-3x)=0\)

\(37-3x=0-122\)

\(37-3x=-122\)

\(3x=37-(-122)\)

\(3x=159\)

\(x=159:3=53\)

\(a,\left(2x-7\right)-135=0\)

\(\Rightarrow\)\(2x-7=0+135\)

\(\Rightarrow\)\(2x-7=135\)

\(\Rightarrow\)\(2x=135+7\)

\(\Rightarrow2x=142\)

\(\Rightarrow x=142:2\)

\(\Rightarrow x=71\)

Vậy \(x=71.\)

\(b,122+\left(37-3x\right)=0\)

\(\Rightarrow\)\(37-3x=0-122\)

\(\Rightarrow\)\(37-3x=-122\)

\(\Rightarrow\)\(3x=-37-\left(-122\right)\)

\(\Rightarrow3x=159\)

\(\Rightarrow x=159:3\)

\(\Rightarrow x=53\)

Vậy \(x=53.\)

a, \(x\) + (\(x\) + 1) + (\(x\) + 3) = 153

    \(x\) + \(x\) + 1 + \(x\) + 3 = 153

     3\(x\) + 4 = 153

    3\(x\)        = 153 - 4

    3\(x\)        = 149

       \(x\)       = 149 : 3

        \(x\)     = \(\dfrac{149}{3}\)

b, (\(2x-7\)) - (\(x\) + 135) =0

     2\(x\) - 7 - \(x\) - 135 = 0

     \(x\)  - 142 = 0

      \(x\)          =  142

(2x-7)-135=0

2x-7=0+135

2x-7=135

2x=135+7

2x=142

   x=142:2

   x=71

vậy x=71

b)122+(37-3x)=0

              37-3x=0-122

               37-3x=-122

                      3x=37-(-122)

                       3x=159

                          x=159:3

                          x=53

 vậy x=53 

nhớ **** cho mình nha

chuan com me nau

2 x = 0 + 135

2 x = 135

x = 67,5

a) \(\left(2x+7\right)+135=0\)

\(2x+7=0-135\)

\(2x+7=-135\)

\(2x=-135-7\)

\(2x=-142\)

\(x=-142:2\)

\(x=-71\left(tm\right)\)

Vậy \(x=-71\)

a) (2x+7) + 135 = 0

2x+7= -135

2x= -135-7

2x=-142

x= -142 : 2=-71

b) (162 +3x) +(x-2)=0

162+ 3x + x-2=0

162+ x(3+1)-2=0

x.4= 0-162 +2

x.4= -160

x= -160: 4= -40

Chúc bạn học tốt

( 2x - 7 ) - ( x + 135 ) = 0

2x - 7 - x -135 = 0

x - 142 = 0 

x = 0 + 142 

x = 142

nhớ tk mn nha

Trả lời:

\(\left(2x-7\right)-\left(x+135\right)=0\)

\(\Leftrightarrow\) \(2x-7-x-135=0\)

\(\Leftrightarrow\)                      \(x-142=0\)

\(\Leftrightarrow\)                                     \(x=142\)

Vậy.....

( 2x - 7 ) - ( x + 135 ) = 0

=> 2x - 7 - x - 135 = 0

=> 2x - x = 135 + 7 

=> x = 142