SOLUTION: If a number is added to twice the number, the result ks -18. What is the number?

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Question 1068320: If a number is added to twice the number, the result ks -18. What is the number?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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If a number is added to twice the number, the result is -18.
What is the number?
:
n + 2n = -18
3n = -18
n = -18/3
n = -6