(5x - 36) : 18 = 12
(x -890) . (74 - x) = 0
A,3(X-5)+6=36
B,200-8(X+7)=24
C,(X-890).(74-X)=0
D,(31-X)(X-64)=0
a,3.(x-5)+6=36
b,200-8.(x+7)=24
c,(x-890).(74-x)=0
d,(31-x).(x-64)=0
làm giúp mình vs ạ
mình đang cần gấp
a) \(3\left(x-5\right)+6=36\)
\(\Rightarrow3\cdot\left(x-5\right)=36-6\)
\(\Rightarrow3\cdot\left(x-5\right)=30\)
\(\Rightarrow x-5=10\)
\(\Rightarrow x=10+5\)
\(\Rightarrow x=15\)
b) \(200-8\cdot\left(x+7\right)=24\)
\(\Rightarrow8\cdot\left(x+7\right)=200-24\)
\(\Rightarrow8\cdot\left(x+7\right)=176\)
\(\Rightarrow x+7=\dfrac{176}{8}\)
\(\Rightarrow x+7=22\)
\(\Rightarrow x=22-7\)
\(\Rightarrow x=15\)
c) \(\left(x-890\right)\left(74-x\right)=0\)
+) \(x-890=0\)
\(\Rightarrow x=890\)
+) \(74-x=0\)
\(\Rightarrow x=74\)
d) \(\left(31-x\right)\cdot\left(x-64\right)=0\)
+) \(31-x=0\)
\(\Rightarrow x=31\)
+) \(x-64=0\)
\(\Rightarrow x=64\)
Tìm X
A. 3636: (12x X - 91) =36
B. (X: 22+ 45) x67= 8911
C. (X +74) -318= 200
D.5x X- 18 = 8+9
L. 1440: (125- X) =12
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
Viết tập hợp M các stn x biết x =a+b; biết a thuộc {25;38}b thuộc {14;23}
viết tập hợp Q các stn y biết y =c;d biết c thuộc {4;6} d thuộc {2;4}
2)tìm stn x
a) (x-47)-115=0
b)(x-36):18=12
c)105-5x=30
d)6x-5=613
e)315+(146-x)=401
f)5x:24=0
h86+4.(x-12)=38
i)12-(x-1)=02x+36:18=12
l) 0:x=0
tìm x biết
a)12.(x-1)=0 b.(x-47)-115=0
c)x-36:18=12 d.(x-36):18=12
a, \(12\left(x-1\right)=0\Rightarrow x-1=0\Rightarrow x=1\)
b, \(\left(x-47\right)-115=0\Rightarrow x-47-115=0\)
\(\Rightarrow x=115+47=162\)
c, \(x-36:18=12\Rightarrow x-2=12\Rightarrow x=14\)
d, \(\left(x-36\right):18=12\Rightarrow x-36=216\Rightarrow x=252\)
Chúc bạn học tốt!!!
\(a.12\left(x-1\right)=0\)
\(x-1=0:12\)
\(x-1=0\)
\(x=0+1\)
\(x=1\)
\(b.\left(x-47\right)-115=0\)
\(x-47=0+115\)
\(x-47=115\)
\(x=115+47\)
\(x=162\)
\(c.x-36:18=12\)
\(x-36=12.18\)
\(x-36=216\)
\(x=216+36\)
\(x=252\)
\(d.\left(x-36\right):18=12\)
\(x-36=12.18\)
\(x-36=216\)
\(x=216+36\)
\(x=252\)
a) 12 . ( x - 1 ) = 0
x - 1 = 0 : 12
x - 1 = 0
x = 0 + 1
x = 1
b) ( x - 47 ) - 115 = 0
x - 47 = 0 + 115
x - 47 = 115
x = 115 + 47
x = 162
c) x - 36 : 18 = 12
x - ( 36 : 18) = 12
x - 2 = 12
x = 12 + 2
x = 14
d) (x - 36) : 18 = 12
x - 36 = 12 . 18
x - 36 = 216
x = 216 + 36
x = 252
2. Tìm x biết : a) 13.(25-4x)=13 b) (2x-4).15=0 c) (x-35)-115=0 d) x-36:18=12 e) (x-36):18=12
a: =>25-4x=1
=>4x=24
hay x=6
b: =>2x-4=0
hay x=2
c: =>x-35=115
hay x=150
d: =>x-2=12
hay x=14
e: =>x-36=216
hay x=252
tìm x
a) 0 : x = 0
b) x - 36 : 18 = 12
c) (x - 36) : 18 = 12
NHỚ TRÌNH BÀY NHA !
a) 0 : x = 0
x = 0 : 0
x = 0
b ) x - 36 : 18 = 12
x - 2 = 12
x = 12 + 2
x = 14
c ) ( x - 36 ) : 18 = 12
( x - 36 ) = 12 x 18
( x - 36 ) = 216
x - 36 = 216
x = 216 - 36
x = 180
b) x - 36 : 18 = 12
x - 2 = 12
x = 12 + 2
x = 14
c) (x - 36) : 18 = 12
x - 36 = 12 x 18
x - 36 = 216
x = 216 + 36
x = 252
\(a,0:x=0\)
\(x=0x0\)
\(x=0\)
\(b,x-36:18=12\)
\(x-2=12\)
\(x=12+2\)
\(x=14\)
\(c,\left(x-36\right):18=12\)
\(x-36=12.18\)
\(x-36=216\)
\(x=216+36\)
\(x=252\)
Cách hiểu 1:[TEX]\frac{44-x}{3}[/TEX]=[TEX]\frac{x-12}{5}[/TEX]
[TEX]\frac{220-5x}{15}[/TEX]=[TEX]\frac{3x-36}{15}[/TEX]
hay 220-5x=3x-36
=220-5x-3x+36=0
=220+36-5x-3x=0
=256-(5x+3x)=0
=256-8x=0
=8x=256
=x=32
( x - 36 ) : 18 = 12
5x - 3 = 3x - 11
3x + 5x = 16
2 ( x + 1) = 10
\(\left(x-36\right):18=12\)
\(x-36=12.18\)
\(x-36=216\)
\(x=252\)
vậy \(x=252\)
\(5x-3=3x-11\)
\(5x-3x=-11+3\)
\(2x=-8\)
\(x=-4\)
vậy \(x=-4\)
\(3x+5x=16\)
\(8x=16\)
\(x=2\)
vậy \(x=2\)
\(2\left(x+1\right)=10\)
\(x+1=5\)
\(x=4\)
vậy \(x=4\)
k nha Pham Tuyet Nhung
1.=> x-36 = 216 = > x = 216 +36 =252
2. =>2x = -8 = > x= -4
3.8 x = 16 = > x = 2
4 . => x= 10 -1 = 9
ok có j ko hiểu hỏi riêng nha
( x - 36 ) : 18 = 12
x - 36 = 12 . 18
x - 36 = 216
x = 216 + 36
x = 252
5x - 3 = 3x - 11
5x - 3x = -11 + 3
2x = -8
x = -8 : 2
x = -4
3x + 5x = 16
8x = 16
x = 16 : 8
x = 2
2 ( x + 1 ) = 10
x + 1 = 10: 2
x + 1 = 5
x = 5-1
x = 4