(11z-14)*38=304 25*(328-8k)=5400 (7z-41)*28=2576 75:(69-4z)=15
11z-14=304:38 328-8k=5400:25 7z-41=2576:28 69-4z=75:15
11z-14=8 328-8k=216 7z-41=92 69-4z=5
11z=8+14 8k=216+328 7z=92+41 4z=5+69
11z=22 8k=544 7z=133 4z=74 z=22:11 k=544:8 z=133:7 z=74:4
z=2 k=68 z=19 z=19