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I think the answers to the second column are as follows:
<span>1. definition of a supplementary angle
2. Addition property of equality
3. division property of equality
</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
Answer:
well, when you are factoring you can always go back an check your work.
Step-by-step explanation: sorry i dont know if this is what you meant