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                            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

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) 125-(x+61)=82

=>x+61=125-82

=>x+61=43

=>x= 43-61

=>x= -18

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) 125-(x+61)=82

=>x+61=125-82

=>x+61=43

=>x= 43-61

=>x= -18

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) 125-(x+61)=82

=>x+61=125-82

=>x+61=43

=>x= 43-61

=>x= -18

a)

( x - 35 ) - 112 = 0 

=> x - 35 = 0 + 112 = 112

=> x = 112 + 35 = 147

b)

   124 + ( 118 - x ) = 27

=> 124 + 118 - x = 27 

=> 242 - x = 27

=> x = 242 - 27 = 215

c)

     156 - ( x + 61 ) = 82

=> 156 - x - 61 = 82 

=> 95 - x = 82

=> x = 95 - 82 = 13

a,x=147

b,x=215

c,x=13

a) \(\left(x-35\right)-112=0\)

\(\Rightarrow x-35=112\)

\(\Rightarrow x=147\)

b) \(124+\left(118-x\right)=27\)

\(\Rightarrow118-x=-97\)

\(\Rightarrow x=215\)

c) \(156-\left(x+61\right)=82\)

\(\Rightarrow x+61=74\)

\(\Rightarrow x=135\)

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

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

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