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Samantha has 29 songs downloaded to her new tablet. She wants to have a total of 100 songs on the tablet. How many more songs does she need to download?
A. define a variable and write a word phrase to model the situation
B. Write an equation and use mental math to solve the equation
C. cheek the solution using substitution



Answer :

apologiabiology
A. she has 29 complete out of 100 and we want to find how many more so
29+x=100
that is also B.
B. 29+x=100
subtract 29 from both sides
x=71


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