2023-02-25

How to write the phrase as an algebraic expression: twice the sum of 15 and a number?

Marissa Snow

See the solution explanation below:
First, let's call "a number" $n$
Then "the sum of 15 and a number" can be written as:
$15+n$
Now, "twice the sum" can be expressed as
$2\left(15+n\right)$

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