November 2018 2 29 Report
Si me ayudan yo los ayudare con muchos puntos!

Me toca responder si es (v) verdadero o falso (f) en cada enunciado y justificar cada respuesta:

a) a - b = a + (-b) = -b + a
b) a + b + c = (a+b) + c = a +(b+c)
c) a + 1 = 1 + a = a
d) a + (-a) = (-a) + a = 0
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