Answer:
x=4
Explanation:
what i did is try to make some whole number and the minimum i got was 4.
1/4 = 0.25 so then do 12+4=16. then do 16*0.25=4. now do 4-6=(-2) then 1/2=0.5. now do 0.5* -2= -1. now do 4-1=3. now when there's no answer x can equal anything