SOLUTION: Please help me solve this problem: The sum of five and a number is twenty. Find the number.

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Question 269711: Please help me solve this problem:
The sum of five and a number is twenty. Find the number.
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
Let X be the number
You are told
5+%2B+X+=+20
subtract 5 from each side
5+%2B+X+-+5+=+20+-+5
X+=+15