Direction : State the property of the mathematical system shown below.

1. 7+0=7 __________________
2.2(3x+y)=6x+2y _______________
3.5x+8=8+5x _________________
4.(-10) + 10=0 _________________
5.4a+ (2b+5c)= (4a+2b) +5c _______________

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