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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 - 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) \(\left(x-35\right)-120=0\)
\(\Rightarrow x-35=0+120\)
\(\Rightarrow x=120+35\)
\(\Rightarrow x=155\)
b) \(124+\left(118-x\right)=217\)
\(\Rightarrow118-x=217-124\)
\(\Rightarrow x=118-93\)
\(\Rightarrow x=25\)
c) \(156-\left(x+61\right)=82\)
\(\Rightarrow x+61=156-82\)
\(\Rightarrow x=74-61\)
\(\Rightarrow x=13\)
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
a) \(\left(x-35\right)-120=0\)
\(x-35=0+120\)
\(x-35=120\)
\(x=120+35\)
\(x=155\)
b) \(156.\left(x+61\right)=82\)
\(x+61=82:156\)
\(x+61=\frac{41}{78}\)
\(x=\frac{41}{78}-61\)
\(x=-\frac{4717}{78}\)
c) \(124+\left(118-x\right)=217\)
\(118-x=217-124\)
\(118-x=93\)
\(x=118-93\)
\(x=25\)
a) (x - 35) = 0 + 120
(x - 35) =120
x =120 + 35
x =155
b) (118 - x) = 217 - 124
(118 - x) = 93
x = 118 - 93
x = 25
c) (x + 61) =156 - 82
(x + 61) = 70
x = 70 - 61 = 9
(x-35) - 120 = 0
=> x - 35 = 120
=> x = 155
124 + (118 - x) = 217
=> 118 - x = 217 - 124 = 93
=> x = 118 - 93 = 25
156 - (x+61) = 82
=> x + 61 = 156 - 82 = 74
=> x = 74 - 61 = 13
a, \(\left(x-35\right)-120=0\)
\(\Rightarrow x-35=120\)
\(\Rightarrow x=120+35\)
\(\Rightarrow x=155\)
b, \(124+\left(118-x\right)=217\)
\(\Rightarrow118-x=217-124\)
\(\Rightarrow118-x=93\)
\(\Rightarrow x=118-93\)
\(\Rightarrow x=25\)
c, \(156-\left(x+61\right)=82\)
\(\Rightarrow x+61=156-82\)
\(\Rightarrow x+61=74\)
\(\Rightarrow x=74-61\)
\(\Rightarrow x=13\)
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
a) 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 = 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-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