[tex]2x-9=x+1[/tex] is the equation
Your goal is to get "x" by itself
Also note that whatever you do on one side, you do on the other
[tex]2x-9=x+1[/tex]
Add 9 to each side
[tex]2x=x+10[/tex]
Now -x from each side
[tex]x=10[/tex]
That is your answer
Answer: x=10