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Tomas bought 3 software apps and 2 e-books for a total of $21. The two e-books cost $12. If s represents the cost of each app, the total cost of all 5 items is represented by mc…

Tomas bought 3 software apps and 2 e-books for a total of $21. The two e-books cost $12. If s represents the cost of each app, the total cost of all 5 items is represented by mc…
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5 votes
Tomas bought 3 software apps and 2 e-books for a total of $21. The two e-books cost $12. If s represents the cost of each app, the total cost of all 5 items is represented by mc021-1.jpg. Which statement about verifying the solution for s is true?

asked
User LarsJK
by
8.7k points

2 Answers

6 votes

Answer:

s=3

Explanation:

answered
User Arndt Jonasson
by
8.4k points
4 votes
First compute the cost of the three apps:

21-12=9
The cost of the three apps is $9 then.
Since s is the price of the apps, we deduce the equation:

3s=9 which means that
s=3
answered
User Johanneslink
by
7.9k points
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