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+5+8-16-3
-25+49+88-36
-3+7-9+8-25+34
se resuelve teniendo en cuenta la ley de los signos
+*+=+
-*-=+
-*+=-
+*-=-
+ por + = +
- por - = +
+ por - = -
- por + = -
(-12)+(-5)-(-7)+(-10) =
- 12 - 5 + 7 - 10 =
- 12 - 5 - 10 + 7 =
- 27 + 7 =
- 20
(+5)-(-8)-(+16)+(-3) =
5 + 8 - 16 - 3 =
13 - 19 =
- 6
(-25)-(-49)-(-88)+(-36) =
- 25 + 49 + 88 - 36 =
49 + 88 - 25 - 36 =
137 - 61 =
76
(-3)-(-7)+(-9)-(-8)-(+25)-(-34) =
- 3 + 7 - 9 + 8 - 25 + 34 =
7 + 8 + 34 - 3 - 9 - 25 =
49 - 37 =
12