Respuesta:
conmutativa, 7+4= 4+7
asociativa, (4+2)+3=(3+4)+2
neutro, 9+0=9
inverso, b(-b)=b
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Respuesta:
conmutativa, 7+4= 4+7
asociativa, (4+2)+3=(3+4)+2
neutro, 9+0=9
inverso, b(-b)=b