EJERCICIO A
-5+(-6)-(-5)+(-9)-(+7)+(-10)+7-12
-5-6+5-9-7-10+7-12
-6-9-10-12
-37
EJERCICIO B
(-6+(4+2)-(-9))-((-4)-(7-5)+(-12))+7-15
(-6+6-(-9))-(-4-2-12)+7-15
-(-9)-(-18)+7-15
9+18+7-15
19
EJERCICIO C
4+((-7+(3+2)-(-2))+((-3)-(8-8)*(-10)))+10-3
4+((-7+5+2)+((-3)-0*(-10)))+10-3
4+(0+((-3)-0))+10-3
4+(0+(-3))+10-3
4-3+10-3
8
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Verified answer
EJERCICIO A
-5+(-6)-(-5)+(-9)-(+7)+(-10)+7-12
-5-6+5-9-7-10+7-12
-6-9-10-12
-37
EJERCICIO B
(-6+(4+2)-(-9))-((-4)-(7-5)+(-12))+7-15
(-6+6-(-9))-(-4-2-12)+7-15
-(-9)-(-18)+7-15
9+18+7-15
19
EJERCICIO C
4+((-7+(3+2)-(-2))+((-3)-(8-8)*(-10)))+10-3
4+((-7+5+2)+((-3)-0*(-10)))+10-3
4+(0+((-3)-0))+10-3
4+(0+(-3))+10-3
4-3+10-3
8