Respuesta :

7-3=-x+1
4=-x+1 substract 1
-1 -1
4-1=-x
3=-x multiply by -1
•(-1) •(-1)
-3=x
x=-3
antonio9990
[tex]7-3=-x+1\\4=-x+1 \ \text{or} \ \to \boxed{-x+1=4} \\ \\ -x+1=4 \\ -x=4-1\\-x=3 /-1\\x=-3 \\ \\\\\huge\text{The answer is x=-3}[/tex]