Hi, there--
The Problem: Solve for y.
x = log(y+2)-6 
Add 6 to both sides in order to isolate the logarithmic expression
x+6 = log(y+2)
When I get ready to convert a logarithmic equation to an exponential equation, I always say,
LOGARITHMIC: "Log to the BASE ____  of a NUMBER equals an EXPONENT."
EXPONENTIAL: "A BASE ____ raised to an EXPONENT equals a NUMBER."
In your logarithmic equation, you have "Log to the base 10 of (y+2) equals x+6." Whenever no 
base is shown (the little subscript right after the word "log), the base is understood to be 10.
BASE = 10
NUMBER = y+2
EXPONENT = x+6
Translating to exponential form, we have base 10 raised to "x+6" equals "y+2".
10^(x+6) = y+2 
Subtract 2 from both sides to solve for y.
I hope this helps! Please email me if you have questions about any part of this. I'll be happy to help 
you sort it out.
Ms.Figgy
math.in.the.vortex@gmail.com