Реши уравнение y-(12+9)=47

Question

Реши уравнение y-(12+9)=47

Answer 1

Y-(12+9)=47
y-12-9=47
-12-9-47=-y
-68=-y
y=68

Answer 2

Y-(12+9)=47
y=(12+9)+47
y=21+47
y=68
____________
68-(12+9)=47
47=47