8-6[-2(-3-1)+4(-2-3)]

You might try posting what you think is correct.
8 - 6[-2[-3 - 1] + 4[-2 - 3]]

8 - 6[-2[-4] + 4[-5]]

8 - 6[8 - 20]

You take it from here.

-Dan

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"I must not fear. Fear is the mind killer. Fear is the little death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain." - The Litany Against Fear, "Dune" by Frank Herbert

If you have troubles remembering what to do first, just remember to keep working from the INNER brackets to the OUTER brackets. until all the brackets are gone.
Good luck!