What you will learn in this lesson As long as the dimensions of two matrices are the same, we can add and subtract them much like we add and subtract numbers. Let's take a closer look!

Sal defines what it means to add or subtract matrices. He shows a few examples and discusses some important properties of matrix addition and subtraction.

Learn what matrices are and about their various uses: solving systems of equations, transforming shapes and vectors, and representing real-world situations. Learn how to add, subtract, and multiply …

Practice your understanding of the process of adding or subtracting two matrices.

A matrix is a rectangular arrangement of numbers into rows and columns. Each number in a matrix is referred to as a matrix element or entry. If this is new to you, you might want to check out our intro to …

Learn about the properties of matrix addition (like the commutative property) and how they relate to real number addition.

This topic covers: - Adding & subtracting matrices - Multiplying matrices by scalars - Multiplying matrices - Representing & solving linear systems with matrices - Matrix inverses - Matrix determinants - …

Sal shows how to add vectors by adding their components, then explains the intuition behind adding vectors using a graph.

Solve equations where the unknown is a matrix, by using matrix addition and subtraction.

Learn what a zero matrix is and how it relates to matrix addition, subtraction, and scalar multiplication.