5=2x+11 subtract 11 from both sides -5-11=-16 carry down 2x divide -16 to 2x a negitive and a postitve is always negative. your solution is -0.125

This is incorrect. The first part subtracting 11 is correct. 
However it should look like this simplifed > 

Then you want to divide by 2!



Once you have done that. You get your final answer!

x = -8

Hope this helps!