Respuesta:
a) 19 - (-12)
19+12
31
b) (-82)-9
-82 - 9
-91
c) - 6 -(-27)
-6 + 27
21
d) 18-(-2)
18-2
20
e) (-18)-4
-18 -4
-22
f) -(12)-(-11)
-12+11
-1
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Respuesta:
a) 19 - (-12)
19+12
31
b) (-82)-9
-82 - 9
-91
c) - 6 -(-27)
-6 + 27
21
d) 18-(-2)
18-2
20
e) (-18)-4
-18 -4
-22
f) -(12)-(-11)
-12+11
-1