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User Jolestar
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1 Answer

3 votes

Explanation:

1. 120+21 =141

2. 21-3=18

3. 7x-21

4. 4x+20

5. 45+100=145

6. 40+5c

7. 20+22r+26s

Im not too sure about the other question

User Mike Chess
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8.5k points