how do you do a two by three times a three by three matrice?

Answer 1

Review the section in your textbook covering matrix multiplication to get the entries in the resulting 2 x 3 matrix.
Or try a website:
http://mathworld.wolfram.com/MatrixMultiplication.html

Answer 2

For each row in the first and each colum in the second, multiply the corresponding terms, then add the the results to get a single number. Write this in the position in the result matrix with the same row number as in the first matrix and the same column number as in the second matrix.

Answer 3

[a b c]x [ g h i]
d e f - ---j k l
----------m n o
=[ ag+bj+cm - ah+bk+cn - ai+bl+co]
-- dg+ej+fm - - dh+ek+fn - di+el+fo
matrix of order 2x3
ive put - cuz yahoo does not support spaces