Can you figure out this message?

ZASMEZASIXP IP JUT

One clue the first word starts with an M

Another clue:

Vowels have not been coded.

MATHEMATICS IS FUN

To decipher the encoded message, you can use a technique called the Caesar cipher. It involves shifting each letter in the message a certain number of places down or up the alphabet.

Since you mentioned that the first word starts with an 'M,' we can deduce that the corresponding letter in the encoded message is actually an 'I'. From that, we can determine the shifting amount by counting the number of positions between 'M' and 'I' in the alphabet.

The distance between 'M' and 'I' is 3 letters (I, J, K). So, we need to shift each letter in the message 3 positions back to reveal the original message. Applying the Caesar cipher with a shift of -3, we get:

WORLDWIDE WEB HOW FUN

Therefore, the deciphered message is:

WORLDWIDE WEB HOW FUN