Nina originally had more than 105 songs on her MP3 player
Information about the problem:
To solve this problem, we have to state the equation using the information of the problem:
Initial song + songs added > Total songs
x + 15 > 120
x > 120 - 15
x > 105 song
We can say that they are the set of numbers and symbols that are related by the different mathematical operation signs such as addition, subtraction, multiplication, division among others.
Learn more about algebraic operations at: brainly.com/question/3927786
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