To rewrite the expression \(3(-4y - 5)\) using addition, we can distribute the negative signs inside the parentheses.
Here's how you can rewrite it:
\[ 3(-4y - 5) = 3(-4y) + 3(-5) = 3(+(-4y)) + 3(+(-5)) \]
So, you can write:
\[ 3( -4y - 5) = 3( +(-4y) + +(-5) ) \]
In this form, it clearly shows the addition of the terms as you apply the distribution.