Somebody help! How do I do this?

Answer:
[tex]{ \tt{3y - 9 = { \blue{ \boxed{3}}(y) - { \blue{ \boxed{3}}(3)}}}} \\ \\ { \tt{3y - 9 = 3({ \blue{ \boxed{{ \tt{y}}}} - { \blue{ \boxed{3}})}}}} \\ [/tex]
» 3y - 9 is equivalent to 3(y - 3)
Answer:
[tex]{ \tt{3y - 9 = { \blue{ \boxed{3}}(y) - { \blue{ \boxed{3}}(3)}}}} \\ \\ { \tt{3y - 9 = 3({ \blue{ \boxed{{ \tt{y}}}} - { \blue{ \boxed{3}})}}}} \\ [/tex]
» 3y - 9 is equivalent to 3(y - 3)