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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
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 - 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
C)
x-140:35=270
x-140=270x35
x-140=9450
x=9450+140
x=9590
a) (x + 74) - 318 = 200
x + 74 = 200 + 318
x + 74 = 518
x = 518 - 74
x = 444
b) 3636 : (12.x - 91) = 36
3636 = 36(12.x - 91)
3636 : 36 = 12.x - 91
101 = 12.x - 91
101 + 91 = 12.x
192 = 12.x
192 : 12 = x
16 = x
x = 16
c) x - 140 : 35 = 270
x - 4 = 270
x = 270 + 4
x = 274
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 !!!
140 : ( x - 8 ) = 7
x - 8 = 140 : 7 = 20
x = 20 + 8
x = 28
* 140 : (X-8)=7
X-8=140:7
X-8=20
x=20+8
x=28
Vậy X =28
* 4(X+41)=400
X+41=400:4
X+41=100
X=100-41
X=59
Vậy x=59
*135-5(X+4)135
5(X+4)=135-35
5(X+4)=100
X+4=100:5
X+4=20
X=20-4
X=16
Vậy X = 16
(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
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