1)х - 314= 1820
х = 1820 + 314
х = 2134
2134 - 314 = 1820
1820=1820
2) 204 : х = 17
х = 204:17
х = 12
204 : 12 = 17
17=17
1)х - 314= 1820
х = 1820 + 314
х = 2134
2134 - 314 = 1820
1820=1820
2) 204 : х = 17
х = 204:17
х = 12
204 : 12 = 17
17=17