25-1 divided by 3 (18 +9) i know it equals 16 but I have no clue at all how i got it help!!!!!!!!?

Question

i feel real stupid folks please help!

Answer 1

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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

16...............answer

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 luck

Source(s): http://www.ciceros-pillar.com/CIS%201%20-%20Comput... http://www.purplemath.com/modules/orderops.htm