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Can someone help me with this?

1. If 3x+4=y+5, then y+5=3x+4 exemplifies which property?
2. If x = y and y = 10, then x = 10 exemplifies which property?

Respuesta :

3x+4=y+5, then y+5=3x+4
It is called: reflexive property

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x = y and y = 10, then x = 10
It is called: equality substitution property  
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