SOLUTION: The sum of two numbers is 57. One of the numbers is 21. Which of the following equations could be used to find the other number?

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Question 377815: The sum of two numbers is 57. One of the numbers is 21. Which of the following equations could be used to find the other number?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
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