On Oct 2, 7:19 pm, davee wrote:
On Oct 2, 6:30 pm, William Asher wrote:





davee wrote groups.com:

addition is not associative

2+3x5=17 or 2+3x5=25 or (2+3)x5=25 or 2+(3x5)=17
correct..........wrong..........correct........... correct.......
association and distribution are isolated from the basic rule book
the laws as agreed to by consensus unless a single exception can be
found and proven.

Excellent point. But you have some multiplication in there (that's what
the little 'x' symbol means) and when you mix multiplication and
addition, they are not associative in general. Here's a website that
discusses the associativity of addition:

http://www.learningwave.com/chapters...assoc_add.html

Ask your kid or grandkid or the neighbor's kid to explain it to you if
you are still having trouble understanding what the difference is.

Finally, as a rule, you should post and then drink heavily, not vice
versa.

--
Bill Asher

again a literal translation. you were using brackets where they dont
need to be.You did not illustrate the basic rules of mathematics
properly. BODMAS........

1+2+3=2+1+3=3+1+2=6
dont need brackets because the result is the same because the
fundamental law (Brackets then Powers and roots then division and
multiplication and lastly addition and subtraction) is followed in
order.

I quoted an exception.

1+2x3=7, 2x3+1=7, 1+2x3=9 is false because the order of operation is
not followed. (1+2) the brackets force this calculation first because
of the rule book which is agreed to by consensus.