Solve for x
x=3
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\frac{1+3}{2}-x=x-4
Since \frac{1}{2} and \frac{3}{2} have the same denominator, add them by adding their numerators.
\frac{4}{2}-x=x-4
Add 1 and 3 to get 4.
2-x=x-4
Divide 4 by 2 to get 2.
2-x-x=-4
Subtract x from both sides.
2-2x=-4
Combine -x and -x to get -2x.
-2x=-4-2
Subtract 2 from both sides.
-2x=-6
Subtract 2 from -4 to get -6.
x=\frac{-6}{-2}
Divide both sides by -2.
x=3
Divide -6 by -2 to get 3.
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