* Site-Outage Notice: Our engineering elves will be tweaking the Shmoop site from Monday, December 22 10:00 PM PST to Tuesday, December 23 5:00 AM PST. The site will be unavailable during this time.
Dismiss
© 2014 Shmoop University, Inc. All rights reserved.
Matrices

Matrices

 Table of Contents
Home Algebra II Matrices Topics Adding and Subtracting Matrices

Adding and Subtracting Matrices

Adding, Subtracting, and Matrices, Oh My!

It's simple to add and subtract matrices, but they must always be the same size for it to work. The answers are always the same size too. Check it out:

All you do is add the entries in each corresponding place:

Subtraction? Same idea.

Now we just subtract the entries in each place:

Looks tough, but as long as you don't lose your place, you're golden. But remember, they must be the same size. And a 2 × 3 is not the same as a 3 × 2, for example.

People who Shmooped this also Shmooped...

Advertisement
Noodle's College Search
Advertisement
Advertisement
Advertisement