5/6(1/2*[x]-2/3)=3*[x]-9/4
5/12*[x]-5/9=3*[x]-9/4
15*[x]-20=108*[x]-81
15*[x]-108*[x]=-81+20
-93*[x]=-61
[x]=61/93
x=61/93 или x=-61/93
