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only works for adding and multiplying. The order of my numbers will not change the answer. (Remember: moving)
only works for adding and multiplying. How the numbers are grouped does not change the answer. (Remember: who you are with)
if one number equals a second number, the second number equals that first number
If a=b, b=a
if the first number equals the second number and the second number equals the third number, then the third number equals the first number
If a=b and b=c, then a=c
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