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Jonas bought 3 books. Each book was the same price. After using a $10-off coupon, the total charge was $20. Which equation can be used to find b, the cost of each book?

Jonas bought 3 books. Each book was the same price. After using a $10-off coupon, the total charge was $20. Which equation can be used to find b, the cost of each book?
asked 205k views
6 votes
Jonas bought 3 books. Each book was the same price. After using a $10-off coupon, the total charge was $20. Which equation can be used to find b, the cost of each book?

asked
User Jessehz
by
7.9k points

1 Answer

7 votes

Answer:

3b-10=20

Explanation:

3b-10=20

3b-10+10=20+10

3b=30

3b/3=30/3

b=10

answered
User Cphill
by
8.5k points
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