a) ( x - 35 ) - 120 = 0

x - 35  = 0 + 120

x - 35 = 120

       x = 120 + 35

        x = 155

b) 124 + ( 118 - x ) = 217

118 - x = 217 - 124 

118 - x = 93

          x = 118 - 93

           x = 25

c) 156 - ( x + 61 ) = 82

x + 61 = 156 - 82

x + 61 = 74

      x = 74 - 61

        x = 13

a) ( x - 35 ) - 120 = 0

    x - 35 = 0 + 120

    x - 35 = 120

          x = 120 - 35

          x = 85

b) 124 + ( 118 - x ) = 217

118 - x = 217 - 124

118 - x = 93

x = 118 - 93

x = 25

c) 156 - ( x + 61 ) = 82

 x + 61 = 156 - 82

x + 61 = 74

x = 74 - 61

x = 13

A. ( x - 35 )-120=0

x - 35 = 0 + 120

x - 35 = 120

x = 120 + 35

x - 155

B. 124 + ( 118 - x ) = 217

118 - x = 217 - 124

118 - x = 83

 x = 118 - 83

x = 25

C. 156 - ( x + 61) = 82

x + 61 = 156 -82

x + 61 = 64

x = 64 - 61

x = 3

124+(118-x)=217

=>118-x=217-124

=>x=118-93

=>x=25

156-(x+61)=82

=>x+61=156-82

=>x=74-61

=>x=13

a)(x-35)-120=0

  x-35        =0+120

x-35         =120

x              =120+35

x            =155

b)124+(118-x)=217

          118-x  =217-124

          118-x =93

                x=118-93

                x=25

c)156-(x+61)=82

         x+61=156-82

         x+61 =74

         x       =74-61

        x        =13

\(\left(x-35\right)-120=0\)

\(=>x-35=120\)

\(=>x=120+35\)

\(=>x=155\)

a) (x - 35) - 120 = 0

x - 35 = 120

x = 155

b) 124 + (118 - x) =217

118 - x = 217 - 124

118 - x = 93

x = 25

c) 156 - (x + 61) = 82

x + 61 = 156 - 82

x + 61 = 74

x = 13

h) \(124+\left(118-x\right)=217\Rightarrow118-x=217-124\Rightarrow118-x=93\Rightarrow x=118-93\Rightarrow\)\(x=25\)

Vậy \(x=25\)

i) \(156-\left(x+61\right)=82\)\(\Rightarrow x+61=156-82\Rightarrow x+61=74\Rightarrow x=74-61\)\(\Rightarrow x=13\)

Vậy \(x=13\)

h) 124+(118-x)=217

              118-x=217-124

               118-x=93

                      x=118-93

                      x=25

i) 156-(x+61)=82

            x+61=156-82

             x+61=74

             x       =74-61

             x        =13

124+(118-x)=217

118-x=217-124

118-x=93

      x=118-93

      x=25

 vậyx=25

156-(x+61)=82

        x+61=156-82

        x+61=74

              x=74-61

              x=13

        vậy x=13

a)(x-35)-120=0                            b)124+(118-x)=217                             c)156-(x+61)=82

x-35          = 0+120=120                118-x         =217-124=93                     x+61        = 156-82=74

x              = 120+35=155               x               = 118-93=25                     x              =74-61=13

suy ra x=155                                suy ra x= 25                                       suy ra x=13

a) ( x - 35 ) - 120 = 0

<=> x - 35 = 120

<=> x = 155

b) 124 + ( 118 - x ) = 217

<=> 118 - x = 93

<=> x = 25

c) 156 - ( x + 61 ) = 82

<=> x + 61 = 74

<=> x = 13

(x-35)-120=0

x-35         = 0 + 120

x-35          = 120

x               = 120 + 35

x                = 155

124+(118-x)=217

         118-x = 217-124

          118-x = 93

                x = 118 - 93

                x = 25

156-(x+61)=82

        x + 61=156-82

         x+61  = 74

          x        = 74 - 61

            x       = 13

(x-35)-120=0

x-35 = 0+120

x-35 = 120

x = 120-35

x = 85

124 + (118-x)=217

118-x=217-124

118-x=93

x=118-93

x=25

156-(x+61)=82

x+161=156-82

x+161=74

x=161-74

x=87

do la bai cua minh,co cho sai nao thi sua cho minh nhe

a,(x-35)-120=0
    x-35=120
    x=155
b,124+(118-x)=217
118-x=217-124
 118-x=  93
       x=25
c,156-(x+61)=82
    x+61=156-82
     x+61=74
x=13
 P/S: Bạn Hãy k hộ mk nha ^.^

a, (x - 35) - 120 = 0

=> x - 35 = 120

=> x = 155

b, 124 + (118 - x) = 217

=> 118 - x = 93

=> x = 25

c, 156 - (x + 61) = 82

=> x + 61 = 74

=> x = 13

a) x = 155

b) x = 25

c) x = 13

(x - 35) - 120 = 0

<=> x-35-120=0

<=> x=155

124 + (118 - x) = 217

<=> 242-x=217

<=> x=25

156 - (x + 61) = 82

<=> 156-x-61=82

<=> 95-x=82

<=> x=13

a, (x - 35) - 120 = 0

=> x - 35 = 0 + 120

=> x - 35 = 120

=> x = 120 + 35

=> x = 155

b, 124 + (118 - x) = 217

=> 118 - x = 217 - 124

=> 118 - x = 93

=> x = 118 - 93

=> x = 25

c, 156 - (x + 61) = 82

=> x + 61 = 156 - 82

=> x + 61 = 74

=> x = 74 - 61

=> x = 13

~Study well~

#SJ

a, \(\left(x-35\right)-120=0\)

\(x-35=120\)

\(x=155\)

b, \(124+\left(118-x\right)=217\)

\(118-x=93\)

\(x=25\)

c, \(156-\left(x+61\right)=82\)

\(x+61=74\)

\(x=13\)

Tìm số tự nhiên x,biết:

a) ( x - 35 ) - 120 = 0

<=> x - 35 = 0 + 120 

<=> x - 35 = 120 

<=> x = 120 + 35 

<=> x = 155 

Vậy x = 155 

b) 124 + ( 118 - x ) = 217

<=> 118 - x = 217 - 124 

<=> 118 - x = 93 

<=> x = 118 - 93 

<=> x = 25 

Vậy x = 25 

c) 156 - ( x + 61 ) = 82

<=> x + 61 = 156 - 82 

<=> x + 61 = 74 

<=> x = 74 - 61 

<=> x = 13 

Vậy x = 13 

a. (x - 35) - 120 = 0

x - 35                 = 0 + 120 

x                        = 120 + 35

x                        = 155

b. 124 + (118 - x) = 217

118 - x                 = 217 - 124

x                          = 118 - 93

x                          = 25

c. 156 - (x + 61) = 82

x + 61                 = 156 - 82

x                         = 74 - 61

x                         = 13

a) ( x - 35 ) - 120 = 0

    x - 35           = 120

    x                  = 155

b ) 124 + ( 118 - x ) = 217

                118 - x   = 217 - 124

                118 - x   = 93

                        x   = 118 - 93

                        x   = 25

c) 156  - ( x + 61 ) = 82

               x + 61   = 156 - 82

               x + 61   =  74

               x           =  13

đúng nha, k nha