Question

-6+[(-4+17)-(-3-3)]

Answer 1

The brackets and parentheses tell you what order to do this in.... namely: you do () then [] and then anything left. So:

-6+[(-4+17)-(-3-3)]
= -6 + [13--6]
= -6 + [ 13 + 6]
= -6 + [ 19]
= 13