Question

-3=1/2x+1/2x+x.

Answer 1

I assume you need to solve the equation:
-3=1/2x+1/2x+x.
Assume x not equal to zero, then multiply throughout by x:
-3x=(1/2)+1/2+x^2 (assuming 1/2x means 1/(2x))
x^2+3x+1=0
use the quadratic formula or completing squares to get:
x=(-3 +/- sqrt(3^2-4))/2
=(-3 +/- sqrt(5))/2

Answer 2

confusing but thanks

Answer 3

Please do check 1/2x really means 1/(2x) or (1/2)x, they give completely different answers.

Answer 4

Also the first two terms on the RHS are repeated, they look fishy to me.