Question

How do you subtract `\frac { 4x - 18} { x - 5} - \frac { x - 3} { x - 5}`?

Answer 1

By subtracting the numerators and dividing out common factors.

Explanation:

`(4x -18)/(x-5) - (x -3)/(x-5) = ( 3x -15)/(x-5)`

# ( 3x -15) = 3 ( x - 5)

There is a common factor of ( x-5) divide out this factor

`3 ( x-5)/(x-5) = 3`