Answer:
y = 9
Step-by-step explanation:
[tex] y + 6 = 15 [/tex]
[tex] y = 15 - 6 [/tex]
[tex]\boxed{\green{y = 9 }}[/tex]
[tex]y + 6 = 15 \\ \\ y = 15 - 6 \\ \\ y = 9[/tex]
