1/ \(\dfrac{x+4}{4}+\dfrac{3x-7}{5}=\dfrac{7x+2}{20}\)

2/ \(\dfrac{x}{6}+\dfrac{1-3x}{9}=\dfrac{-x+1}{12}\)

3/ \(\dfrac{x-3}{3}-\dfrac{x+2}{12}=\dfrac{2x-1}{4}\)

4/ \(\dfrac{x-2}{4}-\dfrac{2x+3}{3}=\dfrac{x+6}{12}\)

5/ \(\dfrac{2x-1}{12}-\dfrac{3-x}{18}=\dfrac{-1}{36}\)

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/ \(\dfrac{x-3}{2}+\dfrac{2x+3}{5}=\dfrac{2x+5}{10}\)

giải các phương trình sau  

1/ ( x-2)(x-5)=(x-3)(x-4)

2/ (x-7)(x+7) +x^2 -2=2(x^2+5)

3/ (x-1)^2 +(x+3)^2 =2(x-2)(x=2)

4/ (x+1)^2= (x+3)(x-2)

5/ x^2-(2x-1)(x+3)= 3-x(5+x) 

6/ 3(5-2x) -4( x+2) =5x-18

giải các phương trình sau  

1/ 3(x-1)-5x=9(x+4)-20

2/ 4(3x+2)-3(x-4)=9x+20

3/ (x-1)(x+3)=x^2-4

4/ 2(3+x)-7=3(x+1)-5

5/ x (x+30)=(x+3)(x-7)

giải các phương trình sau 

1/ 2 ( x-5) =(-x-5)

2/ 2(x+3)-3(x-1)=2

3/ 4(x-5) -(3x-1) =x-19

4, 7-(x-2) =5(2-3x)

5, 2x-(5-3x)=7x+1