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I need help with these 3 questions plz

I need help with these 3 questions plz-example-1
User Eliocs
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2 Answers

4 votes
Question 1: 30=4x-12
Question 2: subtraction
Question 3: subtraction
User Bracken
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6 votes

Answer:

16. C

17. D

18. A

Explanation:

User Storax
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