Question

Resuelve las siguientes operaciones
(+5)-(-7)+[(-8)-(+9)]=

(-4)-{ (+6)- [(-8)+(+10)] } - (-5)=

[(-7)-(+8)] -[(-90)+(-5)-(+8)]=

Answer 1

$= (5) - ( - 7) - 17 \\ = - 5 \\ \\ = ( - 4) - 4 - ( - 5) \\ = - 8 + 5 \\ = - 3 \\ \\ = - 15 - ( - 103) \\ = - 15 + 103 \\ = 88$
espero te ayude suerte :)

Answer 2

1)(+5)-(-7)+[(-8)-(+9)]
5+7+[-8-9]
12-17=-5
2)(-4)-{(+6)-[(-8)+(+10)]}-(-5)
-4-{+6-[-8+10]}+5
-4-{+6-2}+5
-4-6+2+5=-3
3)[(-7)-(+8)]-[(-90)+(-5)-(+8)]
[-7-8]-[-90-5-8]
-15+103=88