670 + x = 2051x = 2051 - 670x = 1381
x + 3709 = 8000x = 8000 - 3709x = 4291
x + 8402 = 10000x = 10000 - 8402x = 1598
803 + x = 1005x = 1005 - 803x = 202
x + 805 = 4003x = 4003 - 805x = 3198
Проверка:
Решение верное.
670 + x = 2051
x = 2051 - 670
x = 1381
x + 3709 = 8000
x = 8000 - 3709
x = 4291
x + 8402 = 10000
x = 10000 - 8402
x = 1598
803 + x = 1005
x = 1005 - 803
x = 202
x + 805 = 4003
x = 4003 - 805
x = 3198
Проверка:
670 + 1381 = 20514291 + 3709 = 80001598 + 8402 = 10000803 + 202 = 10053198 + 805 = 4003Решение верное.