1) (653-x) + 122 = 8653 - x + 122 = 8775 - x = 8-x = -68x = 689
2) 544 - (344 - x) = 9544 - 344 + x = 9200 + x = 9x = 98 - 20x = -102
Ответ: x = 689; x = -102.
1) (653-x) + 122 = 8
653 - x + 122 = 8
775 - x = 8
-x = -68
x = 689
2) 544 - (344 - x) = 9
544 - 344 + x = 9
200 + x = 9
x = 98 - 20
x = -102
Ответ: x = 689; x = -102.