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Texas Algebra I: Understanding Matrix Addition and Subtraction

Learn how to add and subtract matrices in this lesson. Understand the concept of matrices, their dimensions, and perform operations with examples.

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Texas Algebra I: Understanding Matrix Addition and Subtraction

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  1. Texas Algebra I Lesson 42: Working with Matrices: Add/Subtract

  2. Lesson Objectives The student will be able to: Add and subtract 2 given matrices

  3. What is A Matrix? A matrix is a rectangular arrangement of numbers in rows and columns. Row column This matrix has 2 rows and 3 columns, so it is said to be a 2 x 3 matrix.

  4. Adding Matrices • Must be a same dimensions • Simply add corresponding elements! Example:

  5. Subtracting Matrices • Must be a same dimensions • Simply subtract corresponding elements! • Watch for negatives!! Example:

  6. Just to be clear… These two matrices are not the same dimensions, so they CANNOT be added or subtracted!! = ?

  7. Lesson Objectives The student will be able to: Add and subtract 2 given matrices

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