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blsea [12.9K]
3 years ago
13

3x - 12 + 6x + 9?/ Help Please

Mathematics
2 answers:
Alexeev081 [22]3 years ago
5 0
9x-3 because you combine like terms
iragen [17]3 years ago
3 0
Combine like terms first
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A carpenter charges $720 for 18 hours of work. She charges the same amount of money for each hour of work.
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Answer:

A

Step-by-step explanation:

To start off, you know 18 hours= 720

So you could automatically get rid of B and D since 19 and 17 are not 18.

After that, you have it down to A and C. The way you would find how much she charges for one hour is dividing 720 by 18. When you do that it means you are divding 720$ into 18 different groups each group representing an hour. When you divide 720 by 18 you should get 40. So every hour she makes 40 dollars. 40x 2 hours is 80. I hope I helped you!

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2 years ago
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