SOLUTION: a number is double and then increased by 9. the result is 57. find the original number

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Question 956436: a number is double and then increased by 9. the result is 57. find the original number
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
2X+9=57
2X=57-9
2X=48
X=48/2
X=24 ANS.
PROOF:
2*24+9=57
48+9=57
57=57