cho mik sửa lại
x.10 = x
=> x = 0
\(x.10=x\)
\(\Rightarrow x.10-x=0\)
\(\Rightarrow x.\left(10-1\right)=0\)
\(\Rightarrow x.9=0\)
\(\Rightarrow x=0:9\)
\(\Rightarrow x=0\)
\(x.10=x\)
\(\Rightarrow x.10-x=0\)
\(\Rightarrow x.\left(10-1\right)=0\)
\(\Rightarrow x.9=0\)
\(\Rightarrow x=\frac{0}{9}\)
\(\Rightarrow x=0\)
\(x\cdot10=x\)
\(x=\frac{x}{10}\)
\(=>x=0\)