Question

Solve for the variable y: a=by+2

Answer 1

This is simply rewriting a problem to solve for a different variable, which means there will still be other variables in your answer:
a=by+2
Subtract 2:
a-2=by
Divide by b:
(a-2)/b=y
Sometimes, this may be written as (a/b)-(2/b)=y
Hope this helps!

Answer 2

The answer is "a-2/b=y".