25-1 divided by 3 (18 +9) i know it equals 16 but I have no clue at all how i got it help!!!!!!!!?
i feel real stupid folks please help!
- MerlinLv 71 decade agoFavorite Answer
I had to work for a bit to find your answer in this.....parentheses would help. I think it reads:
25 - (1/3)(18 + 9).........first the last group in brackets is done
25 - (1/3)(27).........now 1/3 times 27
25 - 9.........and finally
Remember PEMDAS (Please Excuse My Dear Aunt Sally). We do parenthesis first. To do this does require addition of 18 and 9 but required to get rid of the parenthesis. Next we do the multiplication of 1/3 times 27. Finally we do the subtraction.
Look at the 2 sites I've linked below. Other than that, it's just practice. Soon it will have a natural order....you won't even need to think about it.
Good luckSource(s): http://www.ciceros-pillar.com/CIS%201%20-%20Comput... http://www.purplemath.com/modules/orderops.htm