Question

Please help!!! (-x/2)+(1/2x)=(-4/x)

Answer 1

Are you solving this for x? You can't because the left side is eliminated by subtracting (1/2)x from (1/2)x.  That leaves nothing on the left. $0= \frac{-4}{x}$
you can't solve that for x because when you multiply both sides by x, 0*x = 0 and $0 \neq 4$
I think you made a mistake in your typing or something...unless the answer was no solution!