Can you just explain how my teacher got the answer

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2017-08-12 18:54:49

First, she divided 10n by 10, which leaves you with n. Second, she did the same thing to 50. She divided 50 by 10, which leaves you with 5. Finally, she did the same thing to 20. She divided 20 by 10, which leaves you with 2. When you do this it leaves you with answers A: n-5/20

2017-08-12 18:56:04

Your teacher divided everything with ten

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