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(+3)+(0)= 3
(+2)+(-6)= -4
(-3)+(-2)= -5
(+3)+(-3)= 0
(+3)+(-2)= 1
(+1)+(-5)= -4
(-3)+(+1)= -2
(-1)+(-1)= 0
Solamente ten en cuenta que los positivos no son necesario escribirlos