X + 70480 = 120000
X = 120000 - 70480
X = 49520
Проверка
49520 + 70480 = 120000
120000 = 120000
-----------------------------
30600 - Y = 1900
Y = 30600 - 1900
Y = 28700
Проверка
30600 - 28700 = 1900
1900 = 1900
-----------------------------
240700 - U = 180950
U = 240700 - 180950
U = 59750
Проверка
240700 - 59750 = 180950
180950 = 180950
------------------------------
Z - 49430 = 87960
Z = 87960 + 49430
Z = 137390
Проверка
137390 - 49430 = 87960
87960 = 87960