83а + 16а = 33 * 177
(83+16)*а = 5841
99а= 5841
а= 5841:99
а=59
==================
83*59 +16*59 = 33*177
4897+944=5841
5841=5841
11 * 3у = 1089
3у = 1089 : 11
3у= 99
у=99:3
у=33
===============
11 * 3 * 33 = 1089
33 * 33 = 1089
1089=1089
1824:с = 32
с= 1824 : 32
с= 57
============
1824 : 57 = 32
32 = 32