please help me i dont remember how to do these anymore
1. add (1/x+3) + (5/x-4)
2. subtract (3/x) - (7/x-2)
3. subract (3/x-3) - (4/x+5)
By the way, and not to be a stick-in-the-mud, but you're still not expressing these in a mathematically correct way, which is important because it's hard for us to tell what you mean. The correct way to use the parentheses would be
1. 1/(x+3) + 5/(x-4)
2. 3/x - 7/(x-2)
3. 3/(x-3) - 4/(x+5)
In other words, you need to group all the numerators and denominators together, so we know what is being divided into what. I hope that makes sense.