Question

Quanto é:
25-{-8-[3+(-6-2)+5]}

-35+{7+[(-12-18+2-1)]-16}

(-38-72)+(50-17)-(84-21+13)

Answer 1

25-{-8-[3+(-8)+5]}
25-{-8-0}
25-(-8)= 25+8= 33

Answer 2

a)25-{-8-[3+(-6-2)+5]}=
25-{-8-[3-8+5]}=
25-{-8-0}=
25-{-8}=
25+8= 33
b)-35+{7+[(-12-18+2-1)]-16}=
-35+{7+[-29]-16}=
-35+{7-29-16}=
-35+{7-45}=
-35+{-38}=
-35-38= -73
c)(-38-72)+(50-17)-(84-21+13)=
-110+33-76=
-186+33= -153