Basic Algebra: solve -x + 12 = -4 + x

[paulac]

I am trying to figure out this problem.

-x + 12 = -4 + x

I'm sure it's basic, but I sometimes feel like I'm an algebra idiot. Thank you for your help!

 

[jonboy]

Hello, paulac!

If you are solving for $\displaystyle x$:

\(\displaystyle \L \;\,-\,x\,+\,12\,=\,-\,4\,+\,x\)


Add $\displaystyle x$ to both sides:\(\displaystyle \L \;12\,=\,-\,4\.+\,2x\)

Add $\displaystyle 4$ to both sides:\(\displaystyle \L \;16\,=\,2x\)

Now finish it up!