164:х=345-304
345-304=41
164:41=4
х:30=4085+2365
4085+2365=6450
6450:30=215
164:х=41
Х=164:41
Х=4
Проверка:
164:4=41
41=41
Х:30=4085+2365
Х:30=6450
Х=6450*30
Х=193500
193500:30=6450
6450=6450
164:х=345-304
345-304=41
164:41=4
х:30=4085+2365
4085+2365=6450
6450:30=215
164:х=345-304
164:х=41
Х=164:41
Х=4
Проверка:
164:4=41
41=41
Х:30=4085+2365
Х:30=6450
Х=6450*30
Х=193500
Проверка:
193500:30=6450
6450=6450