a) -461+(|x|- 45) =387-|-390|
262+(2x-123)=283
213-(x+84)=-16
461+(x-45)=387
\(262+\left(2x-123\right)=283\\ \Rightarrow2x-123=21\\ \Rightarrow2x=144\\ \Rightarrow x=72\)
\(213-\left(x+84\right)=-16\\ \Rightarrow-\left(x+84\right)=-229\\ \Rightarrow x+84=229\\ \Rightarrow x=145\)
\(416+\left(x-45\right)=387\\ \Rightarrow x-45=-29\\ \Rightarrow x=16\)
Tìm x biết:
a)-12+(-9+x)=0
b)21+(25-x)=2
c)461+(x-45)=387
a) -12 + ( -9 + x ) = 0
( -9 + x ) = 0 + 12
( -9 + x ) = 12
x = 12 + 9
x = 21
Vậy x = 21
b) 21 + ( 25 - x ) = 2
( 25 - x ) = 2 - 21
( 25 - x ) = -19
x = 25 + 19
x = 44
Vậy x = 44
c) 461 + ( x - 45 ) = 387
( x - 45 ) = 387 - 461
( x - 45 ) = -74
x = - 74 + 45
x = -29
Vậy x = -29
a, => -12-9+x = 0
=> x-21 = 0
=> x=0+21 = 21
b, => 21+25-x = 2
=> 46-x = 2
=> x = 46-2 = 44
c, => 461+x-45 = 387
=> 416+x = 387
=> x = 387 - 416 = -29
Tk mk nha
a) -12 + (-9 +x) =0
=> -21 +x =0
=> x=21
b) 21+(25-x)=2
=> 46 -x =2
=> x= 44
c) 461 + (x- 45 ) =387
=> x- 416 = 387
=> x= 803
461+(x-45)=387
11-(-53+x)=97
-(x+84)+213=-16
a) 461+x-45=387
<=> 416+x=387
<=> x= -28
b) 11+53-x=97
<=> 64-x=97
<=>x=-33
c) -x-84+213=-16
<=>-x+129=-16
<=> x=145
Tìm số nguyên x biết:
a) 461+(x – 45) = 387
b) 11– (53+ x) = 97
c) -(x+84) + 213= 16x
a) 461+(x – 45) = 387
x-45= 461-387
x-45=74
x= 74+45
x=119
Vậy...
b) 11– (53+ x) = 97
53+x= 11-97
53+x= -86
x= -86-53
x= -139
Vậy....
@Mâyy Câu a bn làm sai rùi kìa
Tìm x biết:
a) 461+(x-45)=387
b) 11-(-53+x) = 97
c) -(x+84)+213=-16
461 + (x - 45 ) = 387
11 - (-53 +x) = 97
- ( x+84 ) + 213 = -16
tìm x
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
11 - ( - 53 + x ) = 97
- 53 + x = 11 - 97
- 53 + x = - 86
x = - 86 - ( - 53 )
x = - 33
Vậy x = - 33
Tìm x:
a) 461+(x-45)=387
b)11-(-53+x)=97
c) -(x+84)+213=-16
Help me!! Thank you !!!!
a) 461 + (x – 45) = 387
x – 45 = 387 – 461
x – 45 = -74
x = -74 + 45
x = -29
Vậy x = -29
b) 11 – (-53 + x) = 97
-53 + x = 11 – 97
-53 + x = -86
x = -86 – (-53)
x = -33
Vậy x = -33
c) -(x + 84) + 213 = -16
-(x + 84) = -16 – 213
-(x + 84) = -229
-x – 84 = -229
-x = -229 + 84
-x = -145
\(\Rightarrow\)x = 145
Vậy x = 145
Tick cho mình nhé!!!
Bài 3 Tìm x
x-36:18=12
(x-36):18=12
461+(x-45)=387
x - 36 : 18 = 12
x - 2 = 12
x= 14
(x - 36) : 18 = 12
(x - 36) = 216
x = 216 + 36
x = 352
461 + (x - 45) = 387
461 + x - 45 = 387
x = 387 - 461 + 45
x = -29
(x-36):18=12
x-36=12x18
x-36=216
x=216+36
x= 252
x-36:18=12
x-2=12
x=14
461+(x-45)=387
x-45= 387 - 461
x-45=-74
x=-74+45
x=-29
x-36:18=12
x-2=12
x=12+2
x=14
(x-36):18=12
(x-36)=12.18
(x-36)=216
x-36=216
x=216+36
x=252
461+(x-45)=387
sai đề hay sao ấy,bạn đánh lại đi
tick nhé
timx
461+(x-45)=387
11-(-53+x)=97
-(x-840+213=-16