First move the (Y) to the other side of the equal sign,

Then subtract add (15) on both sides

Since a variable can't be negative just divide by (-1) on both sides,

The answer would be,

Hope this helped
:D
I believe there were 14 oringal
F. 30 is the correct answer, for mean you just have to add all the ages together and divide by the number of customers
I’m sorry but i don’t know what ur saying