What is $w + 2 - 3w - 4 + 5w + 6 - 7w - 8$?
I want to simplify this expression by combining like terms. That means I need to group together the terms that have the same variable, in this case $w$, and the terms that are constants. Now I can combine the terms inside each pair of parentheses by adding or subtracting them. For the terms with $w$, I have $w - 3w + 5w - 7w = -4w$. For the constants, I have $2 - 4 + 6 - 8 = -4$. So the simplified expression is $-4w - 4$.

