Question 179502
I'm assuming that you want to solve for "x".



{{{x-a=-x+a+4b}}} Start with the given equation.



{{{x=-x+a+4b+a}}} Add {{{a}}} to both sides.



{{{x+x=a+4b+a}}} Add {{{x}}} to both sides.



{{{2x=a+4b+a}}} Combine like terms on the left side.



{{{2x=2a+4b}}} Combine like terms on the right side.



{{{x=(2a+4b)/(2)}}} Divide both sides by {{{2}}} to isolate {{{x}}}.



{{{x=(2(a+2b))/(2)}}} Factor out the GCF 2



{{{x=(cross(2)(a+2b))/cross(2)}}} Cancel out like terms.



{{{x=a+2b}}}



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Answer:


So the answer is {{{x=a+2b}}}