Question 39268
2(x+1) = x-11 ... (first multiply out to get rid of the parenthesis)<P>

2x+2 = x-11 ... (subtract the lone x from both sides of the equation)<P>

x+2 = -11 ... (subtract 2 from both sides of the equation)<P>

x = -13 <P>

Check your answer:
2(-13+1) = -13-11
-24 = -24