Respuesta:
(13.4) + (-8.4)= 5
(-23.5) + (27.7)= 4,2
(-20.2) + (16.2)= -4
(31) + (-16) = 15
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Respuesta:
(13.4) + (-8.4)= 5
(-23.5) + (27.7)= 4,2
(-20.2) + (16.2)= -4
(31) + (-16) = 15