Given
[tex]m(x)=2x-10[/tex]You have to find x for m(x)=-4
To do so you have to equal the expression to -4 and solve for x
[tex]-4=2x-10[/tex]Pass "-10" to the other side of the expression by performing the inverse operation to both sides of it, that is, to add 10
[tex]\begin{gathered} -4+10=2x-10+10 \\ 6=2x \end{gathered}[/tex]Divide both sides by 2 to determine the value of x
[tex]\begin{gathered} \frac{6}{2}=\frac{2x}{2} \\ 3=x \end{gathered}[/tex]So for m(x)=-4, x=3
