Question

algebra fraction thing!!! pls explain I'm so lost??? like I don't see why the answer isn't 2n-2? did my teacher make a mistake or am I missing something?​

Answer 1

a.

Explanation:

`(n - 9)/(2n - 5) + (3n - 1)/(2n - 5)`

Since the denomaitor is the same, just add straight across.

`(4n - 10)/(2n - 5)`

The numerator can be factored.

The greater common factor is 2 so we have

`(2(2n - 5))/(2n - 5)`

Notice that the numerator and denomiator are the same.

This means they will divide out to 1 so we have

`2`