SOLUTION: Write an algebraic expression that represents the sum if 18 and the opposite of a number.______

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Question 676584: Write an algebraic expression that represents the sum if 18 and the opposite of a number.______
Answer by fcabanski(1391) About Me  (Show Source):
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Sum is the result of addition, so +. Some number means a variable, so use x. The opposite of a number x is -x.


18 + -x

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