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Mathematics 20 Online
OpenStudy (anonymous):

13. What property is used: 3x + 3 = 42 -> 3x = 39

OpenStudy (anonymous):

Subtraction?

OpenStudy (anonymous):

i dont think thats right

OpenStudy (anonymous):

Correct me if I'm wrong.

OpenStudy (anonymous):

I could say commute property, but I can remember to be honest. It's been a while since I've seen these properties identified.

OpenStudy (anonymous):

WHAT???

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