ĐKXĐ : \(\left\{{}\begin{matrix}x\ne2\\x\ne\dfrac{3}{4}\end{matrix}\right.\)
PT \(\Leftrightarrow\dfrac{5\left(3-4x\right)+6\left(x-2\right)}{\left(x-2\right)\left(3-4x\right)}=0\)
\(\Leftrightarrow5\left(3-4x\right)+6\left(x-2\right)=0\)
\(\Leftrightarrow15-20x+6x-12=0\)
\(\Leftrightarrow-14x+3=0\)
\(\Leftrightarrow x=\dfrac{3}{14}\)
Vậy ...
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, \(2\left(x-2\right)-1=5x\)
giải phương trình,giúp với ạ
\(\dfrac{x+1}{4}-\dfrac{5+2x}{8}=\dfrac{3-4x}{2}\)
\(\dfrac{4-3x}{5}-\dfrac{4-x}{10}=\dfrac{x+2}{2}\)
Giải các phương trình sau :
a) \(0,25x+1,5=0\)
b) \(6,36-5,3x=0\)
c) \(\dfrac{4}{3}x-\dfrac{5}{6}=\dfrac{1}{2}\)
d) \(-\dfrac{5}{9}x+1=\dfrac{2}{3}x-10\)
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
1)\(\dfrac{x+1}{85}+\dfrac{x+3}{83}=\dfrac{x+5}{81}+\dfrac{x+7}{79}\)
2)\(\dfrac{x-1}{2015}-\dfrac{x+3}{2011}=\dfrac{x+7}{2007}-\dfrac{x+11}{2003}\)
3)\(\dfrac{x+4}{4}-\dfrac{x-3}{6}=\dfrac{x}{3}\)
4)\(x-\dfrac{x+1}{3}=\dfrac{2x+1}{5}\)
5) \(\dfrac{2x-7}{5}+\dfrac{x+11}{2}=-4\)
giúp em vs ạ, em đang cần gấp
em c.ơn trước ạ
Giải phương trình
a, \(x^4+2x^3-4x^2-5x-6=0\)
b, \(\left(\dfrac{1}{1.101}+\dfrac{1}{2.102}+\dfrac{1}{3.103}+...+\dfrac{1}{10.110}\right).x=\dfrac{1}{1.11}+\dfrac{1}{2.12}+\dfrac{1}{100.110}\)
giải phương trình
\(\dfrac{2x-1}{x^2-4x+4} + \dfrac{5x}{x-2} - \dfrac{25x}{5x-10} = 0\)
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, \(\dfrac{x-1}{x}+\dfrac{1}{x+1}=\dfrac{2x-1}{2x^2+2}\)4, \(\dfrac{2}{x+1}+\dfrac{3x+1}{x+1}=\dfrac{1}{\left(x+1\right)\left(x-2\right)}\)5, \(\dfrac{x+5}{3x-6}-\dfrac{1}{2}=\dfrac{2x-3}{2x-4}\)
giải phương trình \(\dfrac{1}{x+1}-\dfrac{5}{x-2}=\dfrac{15}{\left(x-1\right)\left(2-x\right)}\)
