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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
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
\(\left(x-35\right)-120=0\)
\(=>x-35=120\)
\(=>x=120+35\)
\(=>x=155\)
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
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 = 93
=> x = 25
c, 156 - (x + 61) = 82
=> x + 61 = 74
=> 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
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
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
124 + (118 -x ) = 217 156 - ( x+61) = 82
(118-x) = 217 -124 ( x +61)= 156 - 82
(118 -x)= 93 ( x +61) = 74
x = 118 - 93 x = 74 - 61
x = 25 x = 13