SOLUTION: A number is doubled and then 9 is subtracted if the results is 15 what was the original number

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Question 603744: A number is doubled and then 9 is subtracted if the results is 15 what was the original number
Answer by alicealc(293) About Me  (Show Source):
You can put this solution on YOUR website!
let the number = x

2x - 9 = 15
2x = 15 + 9
2x = 24
x = 24/2 = 12

so the original number is 12