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a) ( x + 74 ) - 318 = 2015
=> x + 74 = 2015 + 318
=> x + 74 = 2333
=> x = 2333 - 74
=> x = 2259
b) 3636 : ( 12 . x - 91 ) = 36
=> 12 . x - 91 = 3636 : 36
=> 12 . x - 91 = 101
=> 12 . x = 101 + 91
=> 12 . x = 192
=> x = 192 : 12
=> x = 16
c) ( x : 23 + 45 ) . 67 = 8911
=> x : 23 + 45 = 8911 : 67
=> x : 23 + 45 = 133
=> x : 23 = 133 - 45
=> x : 23 = 88
=> x = 88 . 23
=> x = 2024
Tìm x, biết :
a) ( x + 74) - 318 = 2015
(x + 74) = 2015 + 318
(x + 74) = 2333
x = 2333 - 742
x = 2259
b) 3636 : (12 . x - 91) = 36
12 . x - 91 = 3636 : 36
12. x - 91 = 101
12 . x = 101 + 91
12 . x = 192
x = 192 : 12
x = 16
c) ( x : 23 + 45) . 67 = 8911
(x : 23 + 45) = 8911 : 67
(x : 23 + 45) = 133
x : 23 = 133 - 45
x : 23 = 88
x = 88 . 23
x = 2024
. là nhân nha
\(a,\Rightarrow12x-91=101\\ \Rightarrow12x=192\\ \Rightarrow x=16\\ b,\Rightarrow x:23+45=133\\ \Rightarrow x:23=88\\ \Rightarrow x=\dfrac{88}{23}\\ c,\Rightarrow\left(6x-39\right):7=3\\ \Rightarrow6x-39=21\\ \Rightarrow6x=60\\ \Rightarrow x=10\\ d,\Rightarrow3x-24=\dfrac{148}{73}\\ \Rightarrow3x=\dfrac{1900}{73}\\ \Rightarrow x=\dfrac{1900}{219}\\ e,\Rightarrow\left[{}\begin{matrix}x=0\\x=10\end{matrix}\right.\\ f,\Rightarrow\left[{}\begin{matrix}x=-1\\x=2\end{matrix}\right.\\ d,\left(9-x\right)^3=64=4^3\\ \Rightarrow9-x=4\\ \Rightarrow x=5\\ h,\Rightarrow x=27\\ i,\Rightarrow6x=312\cdot12=624\cdot6\\ \Rightarrow x=624\\ j,\Rightarrow\left(19x+104\right):14=25-42=-17\\ \Rightarrow19x+104=-238\\ \Rightarrow19x=-342\\ \Rightarrow x=-18\)
a) (x + 74) - 318 = 200
x + 74 = 200 + 318
x + 74 = 518
x = 518 - 74
x = 444
b) 3636 : (12x - 91) = 36
12x - 91 = 3636 : 36
12x - 91 = 101
12x = 101 + 91
12x = 192
x = 192 : 12
x = 16
c) (x : 23 + 45) . 67 = 8911
x : 23 + 45 = 8911 : 67
x : 23 + 45 = 133
x : 23 = 133 - 45
x : 23 = 88
x = 88 . 23
x = 2024
tìm x
67 - 3x = 31
=> 3x = 36
=> x = 12 ,
18 + 3x =24
=> 3x = 6
=> x = 2
( x - 36 ) : 18 = 12
=> x - 36 = 216
=> x = 252
, ( x + 74 ) - 318 = 200
=> x + 74 = 518
=> x = 444
3636 : ( 12x - 91 ) = 36 ,
=> 12x - 91 = 101
=> 12x = 192
=> x = 16
( x : 23 + 45 ) x 67 = 8911
=> x : 23 + 45 = 133
=> x : 23 = 88
=> x = 2024
Tìm x
67 - 3x = 31
=> 3x = 67 - 31
=> 3x = 46
=> x = 46/3
18 + 3x = 24
=> 3x = 24 - 18
=> 3x = 6
=> x = 2
(x - 36) : 18 = 12
x - 36 = 12.18
x - 36 = 216
x = 216 + 36
x = 252
(x + 74) - 318 = 200
x + 74 = 200 + 318
x + 74 = 518
x = 518 - 74
x = 444
3636 : (12x - 91) = 36
12x - 91 = 3636 : 36
12x - 91 = 101
12x = 101 + 91
12x = 192
x = 16
(x : 23 + 45) x 67 = 8911
x : 23 + 45 = 8911 : 67
x : 23 + 45 = 133
x : 23 = 133 + 45
x : 23 = 178
x = 4094
(x+74) - 318=200
x+74 =200+318
x+74 =518
x =518-74
x = 444
[ (x-29) - 11 ] : 2 = 8
[ (x-29) - 11 ] = 8x2
[ (x-29) - 11 ] = 16
x-29 = 16 + 11
x-29 = 27
x = 27 + 29
x = 56
3636 : (12x -91) =36
12x-91 =3636 : 36
12x-91 = 101
12x = 101 + 91
12x = 192
x = 192 : 12
x = 16
[ ( 250 - 25 ) : 15 ] : x = ( 450 - 60 ) : 130
[ 225 : 15 ] : x = 390 : 130
15 : x = 3
x = 15 : 3
x = 5
[ ( 4x + 28 ) . 3 - 55 ] : 5 = 35
[ ( 4x + 28 ) . 3 - 55 ] = 35 : 5
[ ( 4x + 28 ) . 3 - 55 ] = 7
( 4x + 28 ) . 3 = 7 + 55
( 4x + 28 ) . 3 = 62
( 4x + 28 ) = 62 : 3
SAI ĐỀ RỒI TÍNH KO RA
a. (x+74)-318=200
=>x+74=200+318
x+74=518
x =518-74
x =444
b. 3636:(12.x-91)=36
=> 12.x-91=3636:36
12.x-91=101
12.x =101+91
12.x =192
x =192:12
x =16
c. (x:23+45).67=8911
=>x:23+45=8911:67
x:23+45=133
x:23 =133-45
x:23 =88
x =88.23
x =2024
318-74=244
200+318=518
mình chỉ biết giải đến đấy thôi đừng giận mình nhé
a ) \(\left(x+74\right)-318=200\)
\(\left(x+74\right)=200+318\)
\(x+74=518\)
\(x=518-74\)
\(x=444\)
Vậy \(x=444\)
b ) \(3636:\left(12x-91\right)=36\)
\(\left(12x-91\right)=3636:36\)
\(12x-91=101\)
\(12x=101+91\)
\(12.x=192\)
\(x=192:12\)
\(x=16\)
Vậy \(x=16\)
c ) \(\left(x:23+45\right).67=8911\)
\(\left(x:23+45\right)=8911:67\)
\(x:23+45=133\)
\(x:23=133-45\)
\(x:23=88\)
\(x=88.23\)
\(x=2024\)
Vậy \(x=2024\)
Chúc bạn học tốt !!!
a) x - 7 = 7
x = 7 + 7 = 14
b) 2x - 7 = 17
2x = 17 + 7 = 24
x = 24/2 = 12
c) 2/x +7 = 8
2/x = 8 - 7 = 1
x = 2/1 = 2
d) (x + 74) - 318 = 200
x + 74 = 200 + 318
x + 74 = 518
x = 518 - 74 = 444
e) 3636/(12x - 91) = 36
12x - 91 = 3636/36
12x - 91 = 101
12x = 101 + 91 = 192
x = 192/12 = 16
a) x-7=17
x=17+7
x=24
b) 2x-7=17
2x=17+7
2x=24
x=24:2
x=12
c) 2:x+7=8
2:x=8-7
2:x=1
x=2:1
x=2
d) (x+74)-318=200
x+74=200+318
x+74=518
x=518-74
x=444
e) 3636:(12x-91)=36
12x-91=3636:36
12x-91=101
12x=101+91
12x=192
x=192:12
x=16
A . 3636 : ( 12 x X - 91 ) = 36
( 12 x X - 91 ) = 3636 : 36
( 12 x X - 91 ) = 101
12 x X = 101 + 91
12 x X = 192
X = 192 : 12
X = 16
B . (X: 22+ 45) x67= 8911
(X: 22+ 45) = 8911 : 67
(X: 22+ 45) = 133
X: 22 = 133 - 45
X: 22 = 88
X = 88 x 22
X = 1936
C . (X +74) -318= 200
X + 74 = 200 + 318
X + 74 = 518
X = 518 - 74
X = 444
D . 5x X- 18 = 8+9
5x X - 18 = 17
5x X = 17 + 18
5x X = 35
X = 35 : 5
X = 7
L . 1440: (125- X) =12
125 - X = 1440 : 12
125 - X = 120
X = 125 - 120
X = 5
K MÌNH NHA !!!
A. X=16
B. X=1936
C. X=444
D. X=7
L. X=5