Which expression is equivalent to

3w−4−w−9?

The expression 3w - 4 - w - 9 is equivalent to 2w - 13.

To simplify the expression 3w - 4 - w - 9, we can combine like terms by adding or subtracting the coefficients of the same variable.

First, let's combine the terms with the variable w.

3w - w = (3 - 1)w = 2w

Now let's combine the constant terms.

-4 - 9 = -13

Putting it all together, we have:

3w - 4 - w - 9 = 2w - 13

Therefore, the expression 3w - 4 - w - 9 is equivalent to 2w - 13.