Answer: -4+x
Step-by-step explanation: First to get rid of the parentheses we multiply -1 times anything inside the parentheses. We got the -1 fro the negative sign in front of the parentheses.
5+x-(2x+1)
5+x-2x-1
Then we combine like terms.
5+x-2x-1
5+x-1
-4+x
The final answer would be -4+x
Hope this helps!