Question

question is in the pic

Answer 1

Do you see that the second denominator is the opposite of the first denominator?

Answer 2

yes

Answer 3

Let's make the denominators the same by multiplying the second fraction by -1 over -1 so that it becomes -x over x-4.

Answer 4

Do you understand that?

Answer 5

yeah

Answer 6

\[\frac{x}{4-x}\times \frac{-1}{-1}=\frac{-x}{-4+x}=\frac{-x}{x-4}\]

Answer 7

So now the denominators are the same and you can add the numerators.

Answer 8

3/x-4?

Answer 9

Now you're rollin'

Answer 10

:) Thanks~ <3

Answer 11

yw