SOLUTION: If a number is nine less than twice its opposite, what are the possible numbers?

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Question 947164: If a number is nine less than twice its opposite, what are the possible numbers?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
Let the number be -x, its opposite is x
-x=2x-9 Add x to each side
0=3x-9 Add 9 to each side
9=3x Divide each side by 3
3=x ANSWER The opposite of the number is 3, so the number is -3