(
+
342
)
-
(
-
78
)
=
+
____________________
(
+
23
)
+
(
-
34
)
=
-
____________________
(
-
42
)
-
(
-
12
)
=
-
____________________
(
+
34
)
-
(
-
52
)
=
+
____________________
(
-
67
)
+
(
-
30
)
=
-
____________________
(
+
107
)
-
(
-
89
)
=
+
____________________
¡
SUERTE
!
