4/9x+5/x+8 how to solve it

Question

its adding with unlike denominators

Answer 1

4/9x + 5/x + 8 has a least common denominator of 9x because 9x, x, and 1 divides 9x.

 

 

Rewrite each term using the same denominator:

 

5/x = 9·5/9x = 45/9x

 

8 = 8/1 = 9x·8/9x = 72x/9x

 

 

Use the rewritten terms:

 

4/9x + 45/9x + 72x/9x = (4 + 45 + 72x)/9x = (72x + 49)/9x