How would I simplify this?

2x-(9x-4)

-7x + 4

How did you get that?

2x - 9x = -7x

-(-4) = + 4

Adding two negatives produces a positive.

To simplify the expression 2x - (9x - 4), you can follow these steps:

Step 1: Distribute the negative sign to every term inside the parentheses.

Start by multiplying -1 to each term within the parentheses:
-1 * 9x = -9x
-1 * -4 = 4

Now the expression becomes: 2x - 9x + 4

Step 2: Combine like terms.

Combine the terms that have the same variable, which in this case is "x":
(2x - 9x) + 4

Combine the x-terms: -7x + 4

So, the simplified expression is -7x + 4.