64-(3n+8n+n):40=37
(3n+8n+n):40=64-37
12n:40=27
12n=27*40
n=1080:12
n=90
проверка
64-(3*90+8*90+90):40=37
64-(270+720+90):40=37
64-1080:40=37
64-27=37
37=37
64-(3n+8n+n):40=37
(3n+8n+n):40=64-37
12n:40=27
12n=27*40
n=1080:12
n=90
проверка
64-(3*90+8*90+90):40= 64-(270+720+90):40=64-1080:40=64-27=37
37=37
