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    brittykitty's Avatar
    brittykitty Posts: 76, Reputation: 2
    Junior Member
    		  
    #1

    Oct 29, 2008, 04:30 PM
    Add-subtract multiply-divide
    This is seriously an elementary question but I'm drawing a blank because I haven't done math in forever. Lets say you have a random equation like
    23.2 divided by 14.56 + 78.6325


    When you do the equation do you subtract/add first or is divide/multiply?

    thanks!
    Khianu's Avatar
    Khianu Posts: 6, Reputation: 3
    New Member
    		  
    #2

    Oct 29, 2008, 05:03 PM
    Multiply and divide, and then add and subtract. As far as which of the pairs you do first, i.e. multiplying before dividing it doesn't make any difference.

    1. multiply and divide
    2. add and subtract

    In this case, (2.32 divided by 14.56) then + 78.6325, answer is 78.79184... in case you wanted to check.

    N.B. if you put it into a calculator, assuming it doesn't have brackets, the calculator should do all the operations in the right order.

    Hope it helps and wasn't too condescending.

    Ben
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #3

    Oct 30, 2008, 03:06 AM

    I suggest using the BODMAS order, that is

    B rakets
    O f
    D ivision
    M ultiplication
    A ddition
    S ubstraction

    Starting from the brackets, down to the subtraction.
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