Question

What‘s -x if x is -4? is it 4 or -4?

Answer 1

If x = -4, then -x = 4.

Explanation:

The procedure for answering this question is straightforward, you just have to substitute the value of x, when you write -x:

If x = -4, then -x = -(-4) = 4 (remember the law of signs)

Therefore: -x = 4.

It actually holds for any real number.