2x+36=-18
| 4x -12| - 2x+ 18=36
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
2x-36 chia 18=12
\(2x-36:18=12\)
\(2x-2=12\)
\(2x=12+2\)
\(2x=14\)
\(x=14:2\)
\(x=7\)
Hok tốt
tớ nghĩ đầu bài thế này
\(\left(2x-36\right):18=12\)
\(2x-36=12\cdot18=216\)
\(2x=252\)
\(x=126\)
Hoặc là \(2x-36:18=12\)
\(2x-2=12\)
\(2x=14\)
\(x=7\)
\(2x-36:18=12\)
\(2x-2=12\)
\(2.\left(x-1\right)=12\)
\(x-1=6\)
\(x=5\)
Tìm x : 3x ( 12x -4 ) - 2x ( 18 x +3 ) = 36
\(3x\left(12x-4\right)-2x\left(18x+3\right)=36\Leftrightarrow36x^2-12x-36x^2-6x=36\)
\(\Leftrightarrow-18x=36\Leftrightarrow x=\dfrac{36}{-18}=-2\) vậy \(x=-2\)
\(3x\left(12x-4\right)-2x\left(18x+3\right)=36\)
\(\Leftrightarrow36x^2-12x-36x^2-6x=36\)
\(\Leftrightarrow-18x=36\)
\(\Leftrightarrow x=-2\)
2x+36=18: 3/x-1/=/-27/
2x + 36 = 18
2x = 18 - 36
2x = -18
x = -18 : 2
x = -9
3|x - 1| = |-27|
x - 1 = 27 : 3
x - 1 = 9
x = 9 + 1
x = 10
2x+36=18 3/x-1/=/-27
2x=18-36 x-1=27:3
2x=-18 x-1=9
x=-18:2 x=9+1
x=-9 x=10
HỌC TỐT NHA
2x + 36 = 18
2x = 18 - 36
2x = -18
x = -18 : 2
x= -9
3/x-1/=/-27/
x-1=-27:3
x-1= -9
x= 9+1
x= 10
giải giùm mình gấp
(x-3) -(2x+5)+18= -36
x-3-2x-5+18=-36
-x+10=-36
-x=-46
x=46
1. Tìm x biết
a. 1440:[41-(2x-5)] =2^4 x3
b, 3x(1-4x)+2x(6x-1) =x-18
c, (2x+1)^3 -72 = (-45)
d, 4^2x-1 +18 = 48+36
e, Tìm x thuốc Z để 2x-1/ x-3 nguyên
1e) Để \(\frac{2x-1}{x-3}\) nguyên thì \(2x-1⋮x-3\)
\(\Leftrightarrow2x-6+5⋮x-3\)
\(\Leftrightarrow2\left(x-3\right)+5⋮x-3\)
Do \(2\left(x-3\right)⋮x-3\) \(\Rightarrow5⋮x-3\)
\(\Rightarrow x-3\in\left\{-5;-1;1;5\right\}\)
\(\Leftrightarrow x\in\left\{-2;2;4;8\right\}\)
Vậy:...................
giúp mk với
ai trả lời nhanh nhất mk ticks cho
x- 36: 18= 12
10+ 2x = 10+ 8+ 18+ 6
x - 36 : 18 = 12
x - 2 = 12
x = 12 + 2
x = 14
x-36:18=12 10+2x=10+8+18+6
x-2=12 10+2x=42
x=12+2 2x=42-10
x=14 2x=32
x=32:2
x=16
a) x – 36 : 18 = 12 – 15
b) 92 – (17 + x) = 72
c) 720 : [41 – (2x + 5)] = 40
d) (x + 2)3 - 23 = 41
\(a,x-36:18=12-15\\ \Rightarrow x-2=-3\\ \Rightarrow x=-1\\ b,92-\left(17+x\right)=72\\ \Rightarrow17+x=20\\ \Rightarrow x=3\\ c,720:\left[41-\left(2x+5\right)\right]=40\\ \Rightarrow41-\left(2x+5\right)=18\\ \Rightarrow2x+5=23\\ \Rightarrow2x=18\\ \Rightarrow x=9\\ d,\left(x+2\right)^3-23=41\\ \Rightarrow\left(x+2\right)^3=64\\ \Rightarrow\left(x+2\right)^3=4^3\\ \Rightarrow x+2=4\\ \Rightarrow x=2\)
b: =>x+17=20
hay x=3
d: =>x+2=4
hay x=2