SOLUTION: How do I solve the problem |2x+x|=9?

Algebra.Com
Question 352644: How do I solve the problem |2x+x|=9?
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
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|3x| = 9
2 cases:
3x = 9 --> x = 3
and -3x = 9 --> x = -3

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