How to type equation in blogspot?

Sometimes, I feel frustrated to write equations on web pages as the equations will not look very nice in shape and really hard to understand. Finally, I found a web site which provides the facilities to translate the "urgly" mathematical equations into "beautiful" one. Here is the saviour of mine.

http://www.codecogs.com/latex/eqneditor.php

Matchstick Puzzle #009

Remove nine matchsticks so that no square (of any size) remains.

Solution:

Matchstick Puzzle #008

Move three matchsticks to new positions to get only four squares. No overlapping or loose ends.

Solution:

Matchstick Puzzle #007

There are five squares in the illustration. Move two matchsticks to new positions to get only four squares. No overlapping or loose ends.

Solution:

Matchstick Puzzle #006

There is a fish swimming to the left as shown in the illustration.

1. Try turn the fish around (to the right) by moving only three matchsticks. Overlapping is not allowed.
2. Try turn the fish by moving only two matchsticks. Overlapping is not allowed.

Solution:

1. To the right
   
   
2. Turn upward/downward

Matchstick Puzzle #005

From this arrangement of 15 matchsticks, remove six matchsticks to leave ten.

Solution:

Matchstick Puzzle #004

Move three matchsticks to make two squares.

Solution: