Adding and subtracting matrices
Adding and subtracting matrices
Lessons
Notes:
We can add and subtract matrices only if the dimensio
ns of the matrices are the same. For example,
Let
We want to find out what A+B is. We see that we are allowed to add A and B together because both A and B has a dimension of 2 x 3.
To add the two matrices together, we simply just need to add the corresponding matrix elements of A and B. So,
Same idea goes for subtracting. We can subtract them because the dimensions are the same. If we want to find out what A  B is, then

2.
Understanding how to add and subtract matrices
Can we add or subtract the following matrices? 
3.
Adding matrices
Add the following matrices: 
4.
Subtracting matrices
Subtract the following matrices 
5.
Solving matrix equations
Solve the following matrix equations: