Put the fractions in least to greatest denomenator then put them in order me 1/8 2/9 5/12 13/18 me

1/8 2/9 5/12 13/18

This is already ordered by denomenator.

Now for the exact value you need to make a common factor

The denamonators are:

8= 2*2*2

9=3*3

12=2*2*3

18=2*3*3

The least common factor is:

2*2*2*3*3=72

As this number will be divisible by all of the above.

1/8 2/9 5/12 13/18 becomes

9/72 16/72 30/72 52/72

So you can see that they are already in order by value too.

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb