Question

a)-5+(-6)-(-5)+(-9-(+7)+(-10)+7-12=
b)[-6+(4+2)-(-9)]-[(-4)-(+7-5)+(-12)]+7-15=​

Answer 1

Respuesta:

a) -5+(-6)-(-5)+(-9-(+7)+(-10)+7-12=

-5-6+5-9-7-10+7-12=

-11+5-9-7-10+7-12=

-6-9-7-10+7-12=

-15-7-10+7-12=

-22-10+7-12=

-32+7-12=

-25-12=

-37

b) [-6+(4+2)-(-9)]-[(-4)-(+7-5)+(-12)]+7-15=

[-6+6+9]-[(-4)-2-12]+7-15=

[0+9]-[-6-12]+7-15=

9-[-18]+7-15=

9+18+7-15=

27+7-15=

34-15=

19