\(\Leftrightarrow3\left(x-3\right)+5\left(2x+1\right)=90\)
=>3x-9+10x+5=90
=>13x-4=90
=>13x=94
hay x=94/13
\(\Leftrightarrow3\left(x-3\right)+5\left(2x+1\right)=90\)
=>3x-9+10x+5=90
=>13x-4=90
=>13x=94
hay x=94/13
\(\dfrac{2x-1}{3}+\dfrac{3x-2}{4}=\dfrac{4x-3}{5}\)
Giải ptrình
\(\dfrac{-12}{x^2-9}+\dfrac{2}{x-3}+\dfrac{3}{x+3}=1\)
Giải ptrình
\(\dfrac{5x-1}{6}+x=\dfrac{6-x}{4}\)
Giải ptrình
\(\dfrac{x+1}{x-2}-\dfrac{5}{x+2}=\dfrac{10}{x^2-4}+1\)
Giải ptrình
Bài 1 giải phương trình:
a) (4x2+4x+1)-x2=0
b) x2-2x+1=4
c) x2-5x+6=0
Bài 2: giải phương trình
a) \(\dfrac{2x-5}{x+5}\)= 3
b) \(\dfrac{5}{3x+2}\)= 2x-1
c) \(\dfrac{x^2-6}{x}\)= x+\(\dfrac{3}{2}\)
d) \(\dfrac{1}{x-2}\)+3= \(\dfrac{x-3}{2-x}\)
e) \(\dfrac{3x-2}{x+7}\)=\(\dfrac{6x+1}{2x-3}\)
f) \(\dfrac{x-2}{x+2}\) - \(\dfrac{3}{x-2}\)=\(\dfrac{2\left(x-11\right)}{x^2-4}\)
giải các phương trinh sau
1/ \(\dfrac{4x-4}{3}-\dfrac{7-x}{5}\)
2/ \(\dfrac{3x-9}{5}=\dfrac{3-x}{2}\)
3/ \(\dfrac{2x-1}{5}-\dfrac{3-x}{3}=1\)
4/ \(\dfrac{x-5}{3}+\dfrac{3x+4}{2}=\dfrac{5x+2}{6}\)
5/ \(\dfrac{x-3}{2}+\dfrac{2x+3}{5}=\dfrac{2x+5}{10}\)
1) giải các phương trình:
a) 11-2x=x-1
b) \(\dfrac{3x+2}{2}\)-\(\dfrac{3x+1}{6}\)=2x+\(\dfrac{5}{3}\)
c) \(\dfrac{x}{2x-6}\)+\(\dfrac{x}{2x+2}\)=\(\dfrac{-2x}{\left(3-x\right).\left(x+1\right)}\)
GIẢI CHI TIẾT AH
Giải các phương trình:
\(1.2x\left(x-3\right)+5\left(x-3\right)\)
\(2.\dfrac{5x+2}{6}-\dfrac{8x-1}{3}=\dfrac{4x+2}{5}-5\)
\(3.\dfrac{x}{2x-6}+\dfrac{x}{2x-2}=\dfrac{-2x}{\left(x+1\right)\left(3-x\right)}\)
giải phương trình
a.(2x- 1)x x^2+ 9x (1 - 2x) = 0
b. \(\dfrac{x+4}{5}\)-x -5= \(\dfrac{x+3}{3}\)- \(\dfrac{x-2}{2}\)
c.(x- 5)x (6x+ 3)= (2x-7)x (3x + 5)
d. \(\dfrac{x+4}{5}\)-2x+ 1= \(\dfrac{x}{3}\)- \(\dfrac{2-x}{6}\)