Simplify 1/2x to x/2
-x/2 + 3 - 4x + 3/2x
Simplify 3/2x to 3x/2
-x/2 + 3 - 4x + 3x/2
Collect like terms
(-x/2 - 4x + 3x/2) + 3
Simplify
-3x + 3