232:х+21=50
232:х=50-21
232:х=29
х=232:29
х=8
(х-18)*17=408
х-18=408:17
х-18=24
х=24+18
х=42
232х = 50-21
232х= 29
х= 232 / 29
х = 8
17х - 306 = 408
17х = 408+306
17х = 714
х = 714 / 17
х = 42
232:х+21=50
232:х=50-21
232:х=29
х=232:29
х=8
(х-18)*17=408
х-18=408:17
х-18=24
х=24+18
х=42
232х = 50-21
232х= 29
х= 232 / 29
х = 8
17х - 306 = 408
17х = 408+306
17х = 714
х = 714 / 17
х = 42