Probably no one has answered this 'cause no one is certain of where the missing ()s belong. It would all be guesses.
I'll say it again.
You have to make it clear even if PEMDAS says which it is because so many don't follow the rules. It never hurts to add a few ()s to show grouping even if the rules say they aren't necessary
If you know PEMDAS you don't have to look at http://www.purplemath.com/modules/orderops.htm
but if you have run out of ()s and you want to say "I know PEMDAS and have followed it!" we can solve it as is. Look at what you have typed and see if it is what the book showed. Otherwise add some ()s.
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