Question

-10-{-2+[1-(-3-5)+3]}

Answer 1

-10-{-2+[1-(-3-5)+3]}

-10-{-2+[1+8+3]}

-10-{-2+12}

-10-10

- 20

Answer 2

-10-{-2+[1-(-3-5)+3]}:
-10-{-2+[1+8+3]}:
-10-{-2+12}:
-10-{+10}:
-10-10: -20