(2x-123):3=33
tìm x
TTìm số nguyên x, biết: a) 262 + ( 2x - 123)= 283; b) 63 - ( - 51 + 3x) = 237 c) - ( 2x + 24) + 211 = -123 d) 125 - ( 125 - x) + 22+ 3x) = 237 c) - ( 2x + 24) + 211 = -123 d) 125 - ( 125 - x) + 22
Tìm x (2x-123):3=33 giúp mình với
\(\dfrac{2x-123}{3}=33\)
<=> \(2x-123=99\)
<=> \(2x=222\)
<=> x = 111
\(\Leftrightarrow2x-123=99\)
hay x=111
a, 3.(37 - \(x\)) - 56 = 1
3.(37 - \(x\)) = 1 + 56
3.(37 - \(x\)) = 57
37 - \(x\) = 57 : 3
37 - \(x\) = 19
\(x\) = 37 - 19
\(x\) = 18
b, 95 - (2\(x\) - 1).4 = 14
(2\(x\) - 1).4 = 95 - 14
(2\(x\) - 1).4 = 81
2\(x\) - 1 = 81 : 4
2\(x\) = \(\dfrac{81}{4}\) - 1
2\(x\) = \(\dfrac{85}{4}\)
\(x\) = \(\dfrac{85}{4}\) : 2
\(x\) = \(\dfrac{85}{8}\)
c,
-45 + (\(x\) - 15) = 23
- 45 + \(x\) - 15 = 23
- (45 + 15) + \(x\) = 23
- 60 + \(x\) = 23
\(x\) = 23 + 60
\(x\) = 83
Bài 1: Tìm x là STN biết:
a) 4(x - 3) = 72 - 20220
b) 123 - 5 x (x + 4) = 38
c) 2x - 138 = 23.32
Mong giúp đỡ ạ!!!
a: =>4(x-3)=49-1=48
=>x-3=12
=>x=15
b: =>123-5(x+4)=38
=>5(x+4)=123-38=85
=>x+4=17
=>x=13
c: =>2x-138=9*8=72
=>2x=72+138=210
=>x=105
a)5. ( x + 35 ) = 515
b) (x+7):3=14c) 72:(x–15)=8
d) 19+(x+23)=50
e) (18–x) + 23 =29
f) 56–(x+14)=22g) (2x +1)–7=14
h) 3. (x+1)–32=67i) 70–5. (x–3)=45
j) 200–8. (2x+7)=112
k) 123–(x+4). 5 =38
\(a,\Rightarrow x+35=103\\ \Rightarrow x=68\\ b,\Rightarrow x+7=42\\ \Rightarrow x=35\\ c,\Rightarrow x-15=9\\ \Rightarrow x=24\\ d,\Rightarrow x+23=31\\ \Rightarrow x=8\\ e,\Rightarrow18-x=6\\ \Rightarrow x=12\\ f,\Rightarrow x+14=34\\ \Rightarrow x=20\\ g,\Rightarrow2x+1=21\\ \Rightarrow x=11\\ h,\Rightarrow3\left(x+1\right)=99\\ \Rightarrow x+1=33\Rightarrow x=32\\ i,5\left(x-3\right)=25\\ \Rightarrow x-3=5\\ \Rightarrow x=8\\ j,\Rightarrow8\left(2x+7\right)=88\\ \Rightarrow2x+7=11\Rightarrow x=2\\ k,\Rightarrow5\left(x+4\right)=85\\ \Rightarrow x+4=17\\ \Rightarrow x=13\)
Bài 1 : Tìm x thuộc Z , biết :
a) -x+9+123)=-52+(-123)
b)-(x+30)-5=-25 + 153
c)x-34+125=-(34+75)
d)(420-x)+(-123)= -(-420)+177
e)-x-530=-2x+30
g)-(x+123)-153=-2x+502
CẦN GẤP !!!NHANH TICK !!!!!!
123-5.(x+4)=38
10+2x=2.(32-1)
2.x-138=23.32
[102+(28-2x)]:20-5=1
231-(x-6)=1339:13
123-5.(x+4)=38
5(x+4)=123-38
5(x+4)=85
x+4=85:5
x+4=17
x=17-4
x=13
10+2x=2.(32-1)
10+2x=2.(9-1)
10+2x=2.8
2x=16-10
2x=6
x=6:2
x=3
2.x-138=23.32
2.x-138=72
2.x=72+138
2.x=210
x=210:2
x=105
[102+(28-2x)]:20-5=1
(102+28-2x):20=6
130-2x=120
2x=130-120
2x=10
x=10:2
x=5
231-(x-6)=1339:13
231-(x-6)=103
x-6=231-103
x-6=128
x=128+6
x=134
123-5.(x+4)=38
5.(x+4)=123-38
5.(x+4)=85
(x+4)=85/5
x+4=17
x=17-4
x=13
10 + 2x = 2(32 - 1)
=> 10 + 2x = 2(9 - 1)
=> 10 + 2x = 2.8
=> 10 + 2x = 16
=> 2x = 16 - 10
=> 2x = 6
=> x = 6/2
=> x = 3
a)x-123:3=89
b)57+3.(37-4x)=96
c)(2x-1)3=125
\(\left(2x-1\right)^3=125\Leftrightarrow\left(2x-1\right)^3=5^3\)
\(\Leftrightarrow2x-1=5\Leftrightarrow2x=6\Leftrightarrow x=3\)
Rút gọn biểu thức: a) 2x + (-461) - (231 - 461); b) ( -83 - x + 45) + 83 c) 211- (123 - x) + (123 - 211); d) 25- ( 125 - x + 32) + 22