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a/ \(\left(x-35\right)-120=0\)
\(\Leftrightarrow x-35=0+120\)
\(\Leftrightarrow x-35=120\)
\(\Leftrightarrow x=120+35\)
\(\Leftrightarrow x=155\)
Vậy ...
b/ \(124+\left(188-x\right)=217\)
\(\Leftrightarrow188-x=217-124\)
\(\Leftrightarrow188-x=93\)
\(\Leftrightarrow x=95\)
Vậy ...
b/ \(156-\left(x+61\right)=82\)
\(\Leftrightarrow x+61=74\)
\(\Leftrightarrow x=13\)
Vậy ..
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)310-(118-x)=217
118 -x = 93
➩ x = 25
c)156-(x+61)=82
➩ x + 61 = 74
➩ x = 13
a: Ta có: \(x-35-120=0\)
\(\Leftrightarrow x-155=0\)
hay x=155
b: Ta có: \(310-\left(118-x\right)=217\)
\(\Leftrightarrow118-x=93\)
hay x=25
c: Ta có: \(156-\left(x+61\right)=82\)
\(\Leftrightarrow x+61=74\)
hay 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=25
câu c tự giải nhé ( **** cho mình nha)
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 = 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 b) 124+(118-x)=217 c)156-(x+61)=82
x-35=0+120 118-x=217-124 x+61=156-82
x-35=120 118-x=93 x+61=74
x=120+35 x=118-93 x=74-61
x=155 x=25 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
nha..!
(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