Given the matrices <img src="Capture.PNG" alt="Cap5.PNGture.PNG" width="423" height="94"/>
Verify that (A + B) + C = A + (B + C).

Mixed-up sentence exercise

  
Put the parts in order to form a sentence. When you think your answer is correct, click on "Check" to check your answer. If you get stuck, click on "Hint" to find out the next correct part.