674 + \(x\) : 3 x 18 – \(x\) x 46 = 541
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a, => 587 - x = 735 - 541 = 194
=> x = 587 - 194 = 393
b, => x+48 = 1000 : 2 = 500
=> x = 500 - 48 = 452
e, => 2.(100-x) = 46+20 = 66
=> 100-x = 66 : 2 = 33
=> x =100-33 = 67
Đáp án là:
Tìm x:
a. x = 393.
b. x = 452.
c. Chưa rõ đề.
e. x = 67.

(x-5)(x-7)=0
=> x-5=0 hoặc x-7=0
=> x=5 hoặc x=7
541+(218-x)=735
=> 218-x=735-541
=> 218-x=194
=> x=218-194
=> x=24
96-3(x+1)=42
=>3(x+1)=96-42
=>3(x+1)=54
=>x+1=54:3
=>x+1=18
=>x=18-1
=>x=17
(x-47)-115=0
=>x-47=0+115
=>x-47=115
=>x=115+47
=>x=162
(x-36):18=12
=>x-36=12.18
=>x-36=216
=>x=216+36
=>x=252
(x-5).(x-7)=0
x-5=0+7
x=7+5
x=12
541+(218-x)=735
218-x=735-541
x=218-196
x=12
96-3(x+1)=42
3(x+1)=96-42
x+1=54:3
x=17-1
x=16
(x-47)-115=0
x-47=0+115
x=115+47
x=162
(x-36):12=18
x-36=12*18
x-36=216
x=216+36
x=252

a, 541 + ( 218 - x ) = 735
=> 218 - x = 735 - 541
=> 218 - x = 194
=> x = 218 - 194
=> x = 24
Vậy x = 24
b, 96 - 3.( x + 1 ) = 42
=> 3.( x + 1 ) = 96 - 42
=> 3.( x + 1 ) = 54
=> x + 1 = 54 : 3
=> x + 1 = 18
=> x = 18 - 1
=> x = 17
Vậy x = 17
c, ( x - 36 ) : 18 = 12
=> x - 36 = 12.18
=> x - 36 = 216
=> x = 216 + 36
=> x = 252
Vậy x = 252
d, 3x + 3x+1 + 3x+2 = 13.81
=> 3x.1 + 3x.3 + 3x.32= 13.81
=> 3x.( 1 + 3 + 32 ) = 13.81
=> 3x.( 1 + 3 + 9 ) = 13.81
=> 3x.13 = 13.81
=> 3x= 13.81:13
=> 3x= 81
=> 3x = 34
=> x = 4
Vậy x = 4

a) Ta có: 541 + (218-x) = 735
=> 218 -x = 735 - 541
=> 218 - x = 194
=> x = 218 - 194
=>x = 16
b;c làm tưởng tự

1) 15:(x+2) = 3
x + 2 = 15 : 3
x + 2 = 5
x = 5 - 2
x = 3
2) 20:(1+x) = 2
1 + x = 20 : 2
1 + x = 10
x = 10 - 1
x = 9
3) 5(x+35) = 515
x + 35 = 515 : 5
x + 35 = 103
x = 103 - 35
x = 68
4) 541+(218-x) = 73
218 - x = 73 - 541
218 - x = -468
x = 218 - ( - 468 )
x = 686
5) 1230:3 (x-20) = 10
410 . ( x - 20 ) = 10
x - 20 = 10 : 410
x - 20 = 1/41
x = 1/41 + 20
x = 821/41
6) 48-3(x+5) = 24
3( x + 5 ) = 48 - 24
3( x + 5 ) = 24
x + 5 = 24 : 3
x + 5 = 8
x = 8 - 5
x = 3
7) 4x + 18 : 2=13
4x + 9 = 13
4x = 13 - 9
4x = 4
x = 1
8) X-48:16 = 37
x - 3 = 37
x = 37 + 3
x = 40
a, 15: (x+2) = 3
x+2 =15:3
x+2 = 5
x = 5-2
x = 3
b, 20: (1+x) = 2
1+x = 20:2
1+x = 10
x = 10-1
x = 9
c, 5(x+35) = 515
x+35 = 515 :5
x+35 = 103
x = 103-35
x = 68
d, 541+ (218-x) = 73
218-x = 73-541
218-x = - 468
x = 218 - (-468)
x = 218 + 468
x = 686
e, 1230:3. (x-20) = 10
410(x-20) = 10
x-20 = 10: 410
x-20 = 1/41
x = 1/41 + 20
x = 821/41
f, 48-3(x+5) = 24
3(x+5) = 48-24
3(x+5) = 24
x+5 = 24:3
x +5 = 8
x = 8-5
x =3
g, 4x + 18 : 2 = 13
4x + 9 = 13
4x = 13-9
4x = 4
x = 4:4
x = 1
j, x - 48:16 = 37
x- 3 = 37
x = 37+3
x = 40

\(10000-x \times24=541\times16\)
\(10000-x\times24=8656\)
\(x\times24=10000-8656\)
\(x\times24=1344\)
`x=1344:24`
`x=56`
10 000 - X x 24 = 541 x 16
10 000 - X x 24 = 8656
X x 24 = 10 000 - 8656
X x 24 = 1344
X = 1344: 24
X = 56

575- [6x+70] = 445 315 +[125-x] = 435 f 541+[218-x]=435
6x+70 =575-445 125-x = 435- 315 218-x = 541-435
6x+70 = 130 125-x =120 218-x =106
6x = 130-70 x = 125 - 120 x = 218-106
6x = 60 x = 5 x = 112
x = 60:6
x = 10
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\(\orbr{\begin{cases}\\\end{cases}}\)
674 + \(\frac{x}{3}.18\) - x . 46 = 541
674 + \(x.\frac{18}{3}\) - x . 46 = 541
674 + x . 6 - x . 46 = 541
674 + x . (6−46) = 541
674 + x . (−40) = 541
674 − x . 40 = 541
−x. 40 = 541 − 674
−x. 40 = −133
x = -133 : ( - 40 )
x = \(\frac{-133}{-40}\)
\(x=\frac{133}{40}\)
vậy x = \(\frac{133}{40}\)
674 + \(x:3\) x 18 - \(x\) x 46 = 541
\(x\) : 3 x 18 - \(x\) x 46 = 541 - 674
\(x\) : 3 x 18 - \(x\) x 46 = - 133
\(x\) x \(\frac13\) x 18 - \(x\) x 46 = - 133
\(x\) x (\(\frac13\times18\) - 46) = - 133
\(x\) x (6 - 46) = -133
\(x\) x (-40) = - 133
\(x\) = -133 : (-40)
\(x\) = \(\frac{133}{40}\)
Vậy \(x\) \(=\) \(\frac{133}{40}\)