PLEASE HELP!!! I took a number, wrote a 9 to the right of it, and added the doubled original number to the result. The resulting sum is 633. What was the original number? pls show ur work :)

1 answer
Question:

PLEASE HELP!!!
I took a number, wrote a 9 to the right of it, and added the doubled original number to the result. The resulting sum is 633. What was the original number?
pls show ur work :)

Answers

Answer:Step-by-step explanation:If x is the certain number, writing 9 to its right will give us 10x+9.... add 2x to it and we get 12x+9 12x+9 = 633 12x = 624 x= 52.

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