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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có :
\(-\left(x-84\right)+213=16\)
\(-\left(x-84\right)=16-213\)
\(-\left(x-84\right)=-197\)
\(=>x-84=197\)
\(x=197+84\)
\(x=281\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có - ( x + 84 ) = - 16 - 213
suy ra - ( x + 84 ) = - 229
suy ra - x - 84 = - 229
suy ra - x = - 229 + 84
suy ra - x = - 145
suy ra x = 145
Vậy x = 145
-x - 84 + 213 = - 16
-x = -16 + 84 - 213
-x = - 113
x = - 113 : -1
x = 113
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(-\left(x+84\right)+219=-16\)
\(\Leftrightarrow-\left(x+84\right)=-235\)
\(\Leftrightarrow-x=-319\)
\(\Leftrightarrow x=319\)
Vậy x = 319
- ( x + 84 ) + 213 = -16
-x - 84 + 23 = -16
-x = -16 + 84 -23
-x = 45
x = -45
hok tốt!!!
![](https://rs.olm.vn/images/avt/0.png?1311)
-(x+84)+213=(-16)
-(x+84) =-16-213
-x-84 =-229
-x =-229+84
-x =-145
x =145
![](https://rs.olm.vn/images/avt/0.png?1311)
=>-x-84+213=-16
-x+129 = -16
-x=-16-129
-x=-145
=>x=145
**** cho mình nha
![](https://rs.olm.vn/images/avt/0.png?1311)
461 + (x - 45) = 387
x - 45 = 387 - 461
x - 45 = -74
x = -74 + 45
x = -29
11 - (-53 + x) = 97
-53 + x = 11 - 97
-53 + x = -86
x = -86 - -53
x = -33
- (x+84) + 213 = -16
x - 84 + 213 = -16
x - 84 = -16 - 213
x - 84 = -229
x = -229 + 84
x = -145
461 + ( x - 45 ) = 387
x - 45 = 387 - 461
x - 45 = - 74
x = - 74 + 45
x = - 29
Vậy x = - 29
![](https://rs.olm.vn/images/avt/0.png?1311)
a)11-(-53+x)=97
11+53+x=97
64+x+97
x=97-64
x=33
b)-(x+84)+213=-16
-(x+84)=-16-213
-(x+84)=-229
-x=-229-84
-x=-313
x=313
![](https://rs.olm.vn/images/avt/0.png?1311)
-(x+84)+213= -16
-x+84 = -16 - 213
-x+84 = -229
x = -229 - ( -84)
x = -145
- ( x + 84 ) + 213 = -16
- ( x + 84) = -16-213
- ( x + 84 )=-229
- x -84 = -229
-x =-229 + 84
-x =-145
Vậy x = 145
-(x + 84) + 213 = -16
-(x + 84) = -16-213
-(x + 84) = -229
-x - 84 = -229
229 - 84 = x
145 = x
Vay x=145