Hello!
[tex]x + 6 = x\\[/tex]
Explanation:
↓↓↓↓↓↓↓↓↓
First you had to subtract by the x from both sides of the equation.
[tex]x+6-x=x-x[/tex]
Then refine.
[tex]6=0[/tex]
Answer⇒⇒⇒⇒⇒The sides are not equal.
Answer⇒⇒⇒⇒⇒⇒There are no solution.
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-Charlie