**First Step**

In First

We can multiply to matrix , if the number of column of first matrix will equal to the number of rows of second matrix .

Suppose first matrix is A and second matrix is B

4 5 6 5 4 A = B = 6 7 2 3 1

rows and column of A = 2 and rows of B matrix is = 2 and column of B matrix is = 3

Because number of column of first matrix is 2 which is equal to the number of rows of second matrix B .

So , A can multiply with B

**Second Step**

After clearing first step , we will reach second step , in second step we will learn how can multiply matrix each element with other matrix's element .

We multiply every row with other matrix's column .

Suppose in above example

First element after multiply → first row A is 4 and 5 and first column of B is 6 and 2

Second element will be on first row and second columm → first row A is 4 and 5 and second column of B is 5 and 3

Now

We will find third element which will be on first row and third column → first row A is 4 and 5 and third column of B 4 and 1

Now same way we will find second row after multiply A and B which will be three column

Write

4 x 6 + 5 x 2 4 x 5 + 5 x 3 4 x 4 + 5 x 1 A X B = 6 x 6 +7 x 2 6 x 5 + 7 x 3 6 x 4 + 6 x 1After this multiply and add with each other34 35 21 AB = 50 51 30