1) (x-87) - 27 = 36x - 87 - 27 = 36x - 114 = 36x = 36 + 114x = 150
Проверка:(150 - 87) - 27 = 3663 - 27 = 3636 = 36
2) 87 - (41 + y) = 2287 - 41 - y = 2246 - y = 22-y = 22 - 46-y = -24y = 24
Проверка:87 - (41 + 24) = 2287 - 65 = 2222 = 22
Оба уравнения решены верно.
1) (x-87) - 27 = 36
x - 87 - 27 = 36
x - 114 = 36
x = 36 + 114
x = 150
Проверка:
(150 - 87) - 27 = 36
63 - 27 = 36
36 = 36
2) 87 - (41 + y) = 22
87 - 41 - y = 22
46 - y = 22
-y = 22 - 46
-y = -24
y = 24
Проверка:
87 - (41 + 24) = 22
87 - 65 = 22
22 = 22
Оба уравнения решены верно.