Помогите 77-(28+y)=27

Question

Помогите 77-(28+y)=27

Answer 1

77-(28+у)=27
77-28-у=27
49-у=27
49-27=у
у=22

Answer 2

77-(28+у)=27
28+у=77-27
28+у=50
у=50-28
у=22