Divide 4/5 by 2/3. a. 8/15b. 5/6c. 1 1/5d. 1 7/8
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Answer:
Protraction and retraction are the movements of the mandibule. <em>Protraction is when the lower mandibule is pushed forward and retraction is when the lower jaw is pulled backward. </em>You can see in the image I added the example of these movements.
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