SOLUTION: twice the sum of a number and 600

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Question 212377This question is from textbook holt mathematics practice book
: twice the sum of a number and 600 This question is from textbook holt mathematics practice book

Answer by math problem solving(30) About Me  (Show Source):
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Let the unknown number be x
Then the sum of the number and 600 can be expressed as x + 600.
therefore twice the sum of the number and 600 is 2(x+600).