А) (x-87)-27=36
x – 87 – 27 = 36
x = 87 + 27 + 36
x = 150
Ответ: x = 150
проверка
(150-87)-27=36
36=36
б) 87-(41-y)=22
87-41+y=22
y=22-87+41
y=-24
87-(41-(-24))=22
22=22
А) (x-87)-27=36
x – 87 – 27 = 36
x = 87 + 27 + 36
x = 150
Ответ: x = 150
проверка
(150-87)-27=36
36=36
б) 87-(41-y)=22
87-41+y=22
y=22-87+41
y=-24
проверка
87-(41-(-24))=22
22=22