Răspuns :
2011-z:7=2004
z:7=7
z=49
160-y:9=49
y:9=111
y=999
(x:27-18):5*200-1=999
(x:27-18):5=800
x:27-18=4000
x:27=4018
z:7=7
z=49
160-y:9=49
y:9=111
y=999
(x:27-18):5*200-1=999
(x:27-18):5=800
x:27-18=4000
x:27=4018