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Originally posted by canselmi
There is the rule called the Distributive Property. You may not remember it because it was taught back in elementary school, but believe me, it's real.
6÷2(1+2)=x
6÷(2+4)=x
6÷6=x
1=x
Originally posted by canselmi
My Bachelor's degree in Science (with honors as well) was not long ago either, about 6 years.
2(1+2) is one term.
So you have the first term: 6
Divided by the second term: 2(1+2)
Originally posted by canselmi
Let's let 1=x; and we'll set the equation equal to 9
Can you tell me what I'm doing wrong in the following?
6÷2(1+2)=?
6÷2(x+2)=9
6÷(2x+4)=9 --->Distributive Property
6=9*(2x+4) --->Multiply both sides by (2x+4)
6÷9=2x+4 --->Divide both sides by 9
.6667=2x+4 --->Change into decimal (for clarity)
.6667-4=2x --->Subtract 4 from both sides
-3.333=2x
-3.333÷2=x
-1.667=x
But we know that x=1, so therefore the equation doesn't =9.
I know I won't change your mind, but can you tell me what I'm doing wrong?
Originally posted by snowspirit
6÷2(1+2)=?
Order of operations: BEDMAS
Brackets
Exponents
Division
Multiplication
Addition
Subtraction
1+2=3
2x3=6
6/6=1edit on 1-5-2011 by snowspirit because: spelling
Originally posted by snowspirit 6÷2(1+2)=? Order of operations: BEDMAS Brackets Exponents Division Multiplication Addition Subtraction 1+2=3 2x3=6 6/6=1
if division is before multiplication in operation order wouldn't it be 1+2=3 6/2=3 3x3=9?
Originally posted by MollyStewart
reply to post by Itop1
Originally posted by snowspirit 6÷2(1+2)=? Order of operations: BEDMAS Brackets Exponents Division Multiplication Addition Subtraction 1+2=3 2x3=6 6/6=1
someone else wrote:
if division is before multiplication in operation order wouldn't it be 1+2=3 6/2=3 3x3=9?
According to BEDMAS or PEDMAS you do the brackets or parentheses first. (1+2)= 3 then the exponent which is 2. SO 2x3=6 then division which is 6÷6=1. That was my answer but just looking at the equation without thinking about it too hard I can see that to an awful lot of people, 9 seems easy and perfect but it is neither in order or correct.
Originally posted by Honor93
reply to post by MegaMind
well, golllleeee gee here it is nearly 1.5 months later and you still haven't directed me to that "stash of cash" you insist exists. (me thinks you are being a bit selfish)
But what i find even more amazing is the fact that your own signature line must serve as nothing more than whitewash ... "the ability to repeat catch-phrases, cant terms, familiar propositions, gives the conceit of learning and coats the mind with varnish waterproof to new ideas."
math needs no new ideas ... it works fine just as it is.
ps: the ability to accept facts as presented leads to a wisdom far surpassing the entrapment of ideology.