You can only multiply two matrices if their dimensions are compatible , which means the number of columns in the first matrix is the same as the number of rows in the second matrix.
Can you multiply a 2x3 and 2x2 matrix?
Multiplication of 2x2 and 2x3 matrices is possible and the result matrix is a 2x3 matrix.
Can you multiply a 3x3 and 2x3 matrix?
Multiplication of 2x3 and 3x3 matrices is possible and the result matrix is a 2x3 matrix.