Our equation is:
[tex]4(-x)-2(-x)+2=9+(-x)[/tex]
Then we can operate it in the following way, I'll do it step by step
[tex]\Rightarrow4(-x)-2(-x)=(4-2)(-x)=2(-x)[/tex][tex]\begin{gathered} \Rightarrow2(-x)+2=9+(-x) \\ \Rightarrow2(-x)+2-2=9+(-x)-2 \\ \Rightarrow2(-x)=7+(-x) \end{gathered}[/tex][tex]\begin{gathered} \Rightarrow2(-x)-(-x)=7+(-x)-(-x) \\ \Rightarrow(2-1)(-x)=7+(1-1)(-x)=7 \\ \Rightarrow1(-x)=7 \\ \Rightarrow-x=7 \end{gathered}[/tex]
And, if -x=7, then
[tex]\begin{gathered} 4(7)-2(7)+2=9+(7) \\ \Rightarrow28-14+2=9+7 \\ \Rightarrow16=16 \end{gathered}[/tex]
