a) (x-83)-27=35(x-83)-27=35x-83-27=35x-110=35x=35+110x=145
Проверка:(145-83)-27=3562-27=3535=35
б) 97-(51+y)=1197-(51+y)=1197-51-y=1146-y=11-y=11-46-y=-35y=35
Проверка:97-(51+35)=1197-86=1111=11
a) (x-83)-27=35
(x-83)-27=35
x-83-27=35
x-110=35
x=35+110
x=145
Проверка:
(145-83)-27=35
62-27=35
35=35
б) 97-(51+y)=11
97-(51+y)=11
97-51-y=11
46-y=11
-y=11-46
-y=-35
y=35
Проверка:
97-(51+35)=11
97-86=11
11=11