b+2y-b+3y+xy

Let's simplify the expression \( b + 2y - b + 3y + xy \).

1. Combine like terms:
   • The terms involving \( b \): \( b - b = 0 \)
   • The terms involving \( y \): \( 2y + 3y = 5y \)
   • The term involving \( x \) and \( y \): \( xy \)

Putting it all together, we have:

\[ 5y + xy \]

So, the simplified expression is \( 5y + xy \).