**Simplify Complex Fraction**

**(1)**

3 2

--- + ---

7 3

----------

16 2

--- - ---

21 7

16 2

--- - ---

21 7

**(2)**

**8**

10+--

x

---------

20

25+----

x

**(3)**

**9 18**

1- --- + -------

x x^2

-----------------

2 15

1+ --- - -------

x x^2

**(1)**

3 2

--- + ---

7 3

----------

16 2

--- - ---

21 7

## Comments

^{2 }to get:^{2}- 9x +18^{2 }+ 2x - 15