115-(35+у)=39 помогите пж

Question

115-(35+у)=39 помогите пж

Answer 1

115-(35+у)=39
35+у=115-39=76
у=76-35=41
проверка:
115-(35+41)=39

Answer 2

115-(35+у)=39
115-35-у=39
-у=39+35-115
-у=-41
у=41