Ответ:
49 + x = 69
x = 69 − 49
x = 20x − 34 = 46
x = 46 + 34
x = 8036 − x = 14
x = 36 − 14
x = 2280 − x = 46
x = 80 − 46
x = 34x − 28 = 67
x = 67 + 28
x = 95x + 18 = 46
x = 46 − 18
x = 28
Ответ: x = 20; 80; 22; 34; 95; 28 соответственно.
49 + x = 69
x = 69 − 49
x = 20
x − 34 = 46
x = 46 + 34
x = 80
36 − x = 14
x = 36 − 14
x = 22
80 − x = 46
x = 80 − 46
x = 34
x − 28 = 67
x = 67 + 28
x = 95
x + 18 = 46
x = 46 − 18
x = 28
Ответ: x = 20; 80; 22; 34; 95; 28 соответственно.