When the negative of a variable is equal to an integer, then we multiply both sides of the equation by negative one to get the value of the variable.
Thus;
[tex]-25=-x[/tex]This is the same as;
[tex]-x=-25[/tex]So, we multiply by -1, we have;
[tex]\begin{gathered} -1(-x)=-1(-25) \\ x=25 \end{gathered}[/tex]CORRECT ANSWER: x=25