\(3x-6=3\\ \Rightarrow3x=6+3\\ \Rightarrow x=9:3\\ \Rightarrow x=3\)
3x - 6 = 3
3x = 3 + 6
3x = 9
x = 9 : 3
x = 3
Giải phương trình
1) 16-8x=0
2) 7x+14=0
3) 5-2x=0
4) 3x-5=7
5) 8-3x=6
6) 8=11x+6
7)-9+2x=0
8) 7x+2=0
9) 5x-6=6+2x
10) 10+2x=3x-7
11) 5x-3=16-8x
12)-7-5x=8+9x
13) 18-5x=7+3x
14) 9-7x=-4x+3
15) 11-11x=21-5x
16) 2(-7+3x)=5-(x+2)
17) 5(8+3x)+2(3x-8)=0
18) 3(2x-1)-3x+1=0
19)-4(x-3)=6x+(x-3)
20)-5-(x+3)=2-5x
giải phương trình 1)\(\dfrac{1-6x}{x-2}+\dfrac{9x+4}{x+2}=\dfrac{x\left(3x-2\right)+1}{x^2-4}\)2) \(\dfrac{3x+2}{3x-2}-\dfrac{6}{2+3x}=\dfrac{9x^2}{9x^2-4}\)3) \(\dfrac{x+5}{3x-6}-\dfrac{1}{2}=\dfrac{2x-3}{2x-4}\)4) \(\dfrac{x-1}{x}+\dfrac{1}{x+1}=\dfrac{2x-1}{2x^2+2}\)5) \(\dfrac{2}{x+1}+\dfrac{3x+1}{x+1}=\dfrac{1}{\left(x+1\right)\left(x-2\right)}\)
Giải các phương trình sau:
a.|3x-2|=2x+7 b.|-4,5x+5|=6+2,5x e.|3x-9|=2x+5
c.|5x-4|=3x+8 d.|7-4x|=2x+11 f.|6-5x|=2x-3
g.|3x-1|=3x+8 i.|x+5|=2x-2 m.|3x-1|=3x+1
1.giải các phương trình sau:
A.3x+9=0
B.3x-2=0
C.4-2x=0
D.-2x+6=0
E.0,5x-1=0
F.3,6-0,6x=0
G.2/3x-1=1/3
H.-1/3x+1=2/3x-3
i.4x-3=2x+1
1) x2 - x - (3x - 3) = 02) x(x - 6) - 7x + 42 = 0
3) x3 - 3x2 + 3x - 1 = 0
4) (2x - 5)2 - (x + 2) 2 = 0
5) x(2x - 9) = 3x(x - 5)
5(x-2)/4-3x+5x-3/6=4x-1/3
\(\dfrac{7+3x}{9}\)\(+\)\(\dfrac{3}{2}\)\(=5\)\(-\dfrac{5-2x}{6}\)
giải giúp mình 2 bài này
a. x^3-3x^2+3x=9/8
b. (2x/3)+(2x^2/6)=1-(2x/3)
thanks
Giải các phương trình
1,\(3x-1=0\\\) 4, \(\dfrac{x}{3}-\dfrac{x}{5}=4\)
2, \(2-x=3x+1\) 5, \(\dfrac{x-1}{4}+\dfrac{2x+1}{6}=\dfrac{3}{2}\)
3, \(2\left(x-2\right)-1=5x\)
