Respuesta :
Answer:
[tex]y=18[/tex]
Step-by-step explanation:
we have
[tex]\frac{1}{3}(y-9)=3[/tex]
Multiply by [tex]3[/tex] both sides
[tex]3*(\frac{1}{3}(y-9))=3*3[/tex]
[tex](y-9)=9[/tex]
Adds [tex]9[/tex] both sides
[tex](y-9)+9=9+9[/tex]
[tex]y=18[/tex]