SOLUTION: One more than the difference between 18 and seven times a number is -9. What is the number?

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Question 812235: One more than the difference between 18 and seven times a number is -9. What is the number?
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
(18 - 7n) + 1 = -9
18 - 7n + 1 = -9
28 = 7n
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n = 4
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