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juin [17]
4 years ago
12

Read the attachments.

Mathematics
1 answer:
sladkih [1.3K]4 years ago
7 0

Answer:

C. Step 3

Step-by-step explanation:

What he did was correct all the way up until he it 9. He forgot to add the negative sign in front of the 9. You are adding -4 and -5 together. You will get -9.

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3 years ago
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