\(3-\dfrac{2}{2x-3}=\dfrac{2}{5}+\dfrac{2}{9-6x}-\dfrac{3}{2}\)
\(\Leftrightarrow\dfrac{6x-9-2}{2x-3}=-\dfrac{11}{10}-\dfrac{2}{3\left(2x-3\right)}\)
\(\Leftrightarrow30\left(6x-11\right)=-33\left(2x-3\right)-20\)
=>180x-330=-66x+99-20
=>246x=409
hay x=409/246
3- 2/2x-3=2/5+2/9-6x-3/2
a) 1/x-1 + -2/3 x (3/4 - 6/5) = 5/2-2x
b) 3 - 2/2x-3 = 2/5 + 2/9-6x - 3/2
c) x/2 - 1/x = 1/12
Tìm nghiệm của đa thức: a)3.(2x^2-4x-3)-2.(2x2-6x-9)
b) (3x+5).(2x-4)
c) (x^2-2x+2)^2-(x^2-2x+2)
: Tìm x, biết:
a) 3x( 4x- 1) - 2x(6x- 3 )=30 b) 2x(3-2x) + 2x(2x-1)=15
c) (5x-2)(4x-1) + (10x +3)(2x - 1)=1 d) (x+2) (x+2)- (x -3)(x+1) = 9
e) (4x+1)(6x-3) = 7 + (3x – 2)(8x + 9) g) (10x+2)(4x- 1)- (8x -3)(5x+2) =14
a,-2(x-1/2)-5(3/10-x)=7
b,-2/3(3/2-x)=3/4(1/6x-2/9)
c,4-2/3(x-3)=2x-1/2+2/3
Tìm x biết: \(3-\frac{2}{2x-3}=\frac{2}{5}+\frac{2}{9-6x}-\frac{3}{2}\)
Thực hiện phép chia:
a) \((3x^5-9x^6+12x^9):3x\)
b) \((6x^4+4x^3+8x^2):(2x)\)
c) \((8x^6+16x^5-10x^4):(2x^4)\)
d) \((4x^4+6x^5+14x^7):(2x^3)\)
Tìm số hữu tỉ x
a) x/2 - (3x/5 - 13/5 ) = - (7/5 + 7/10 .x)
b) 2/3x - 3/12 = 4/5 - (7/x - x)
c) 3 - 2/2x -3 = 2/5 - 2/9-6x - 3/2
Giúp mik vs mik sẽ tick cho T-T
Bài1: Tìm số hữu tỉ x bt rằng:
e) 2/3x - 3/12 =4/5 - (7/x - 2)
f) 1/x-1 + -2/3 . (3/4 - 6/5) = 5/2 - 2x
g) 3 - 2/2x - 3 = 2/5 + 2/9 - 6x - 2/3
h) x/2 - 1/2 = 1/12
tìm x biết: a)\(\frac{13}{x-1}+\frac{5}{2x-2}=\frac{6}{3x-3}\)
b)
\(\frac{1}{x-1}+\frac{-2}{3}\left(\frac{3}{4}-\frac{6}{5}\right)=\frac{5}{2-2x}\)
c)\(3-\frac{2}{2x-3}=\frac{2}{5}+\frac{2}{9-6x}-\frac{3}{2}\)
