Do you mean \(2-x-2=4\)?
If so, I will solve it as so:
|\(2-x-2=4\)||Combine the like terms on the left hand side of the equation|
|\(-x=4\)||Divide by -1 on both sides to get rid of the negative on the x.|
If you are ever unsure if you have the correct value for your unknown, just plug it back into the equation:
|\(2-(-4)-2=4\)||Check to see if this is true; if it is wrong, you either made a mistake or you have an extraneous solution.|
|\(2+4-2=4\)||Subtracting a negative number is the equivalent of adding a positive one.|
|\(4=4\)||4=4 is a true statement and concludes that the value for x is correct.|