10: \(\Leftrightarrow\dfrac{x+4}{2006}+1+\dfrac{x+3}{2007}+1+\dfrac{x+2}{2008}+1=0\)
=>x+2010=0
hay x=-2010
1: \(\Leftrightarrow4x-x-3=8x+16-3\)
=>8x+13=3x-3
=>5x=-16
hay x=-16/5
2: \(\Leftrightarrow x-2=0\)
hay x=2
3: \(\Leftrightarrow8\left(x-2\right)-4\left(x-2\right)=0\)
=>4(x-2)=0
=>x-2=0
hay x=2