Resposta :
a) + 6 -12 = -(12 - 6) = -6
b) + 9 + 14 = 9 + 14 = 23
c) -8 + 14 = 14 - 8 = 6
d) + 16 -3 = 16 - 3 = 13
e) -19 +0 = -19
a) + 6 -12 = -(12 - 6) = -6
b) + 9 + 14 = 9 + 14 = 23
c) -8 + 14 = 14 - 8 = 6
d) + 16 -3 = 16 - 3 = 13
e) -19 +0 = -19