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2 votes
I need help on how to answer it and the solution

I need help on how to answer it and the solution-example-1

1 Answer

7 votes

6 < x+7 < 8

Subtract 7

6-7 < x+7-7 < 8-7

-1 < x < 1

Since the endpoints are not included, the correct graph is B.

User Dimitris Makris
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