109×3-218:x=436-218 Urgent!

Răspuns :

109*3-218:x=436-218
327-218:x=218
-218:x=218-327
-218:x=-109
x=-109/-218
x=1/2
x≠0
327 -436+218 = 218/x
218x=109I :109
x=1/2