Question

In a question like: 3 − (2x − 5) < −4(x + 2)

Why when opening parenthesis would I change the -5 to a positive 5?

Answer 1

Step-by-step explanation: I think -5 would change to a positive 5 because of the distributive property. In the part -(2x-5), there is a invisible 1 next to the left parenthesis, so it would be -1(2x-5). Then you would distribute the -1 one to the 2x and the -5. So the thing would look like this: -2x+5.