Math: 6÷2(1+2) = ? | |
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Anonymous Coward User ID: 31263808 United States 06/11/2013 01:44 AM Report Abusive Post Report Copyright Violation | 9. Quoting: Zinthaniel With distributive property properly applied. 6÷2*1+6÷2*2= still equals 9. With basic pemdas application. step one "P" (1+2) = 3. step two. From left to right solve any multiplication or division equations. Again from Left to Right. so 6÷2*3 = 9 (Still) Notice how the distributive property is not needed to reach the same absolute answer of 9, but even when applied you still get 9. So 9. thank you basic arithmetic and algebra. =] If you substitute the plus sign with a multiply, in the parenthesis, what do you get then? Parenthesis are there to determine order. A different answer obviously, but I don't get your point. With the distributive property used even with pemdas used in conjunction you still get 9. 6÷2(1+2) 1: "P" 1+2=3 you can choose to leave the 3 in the parentheses if you so choose, but this is not necessary because the parentheses are not relevant at this point. But if you do then you have this. 6÷2(3) Now to distribute, if we must, but why? anyways at this point since only 3 remains in the parentheses we get this 6÷2*3. guess what it still equals 9. Ok, maybe it's cause of my public education, but I'm going to try to explain what I've learned, and I know it's probably somewhere in the last hundred pages or so, but can you please explain the following: 6/2(1a+2a)= ? when a=1 (6)/2(1a+2a)=? when a=1 6/2(1a+2a)=? when a=2 (6)/2(1a+2a)=? when a=2 Under your theory, these should all be the same, yes? The division symbol is not to be construed as necessitating a numerator/denominator relationship. The parenthesis and order of operations supersedes everything else. So, 9. |
Anonymous Coward User ID: 1034800 United States 06/11/2013 02:10 AM Report Abusive Post Report Copyright Violation | parenthesis first and then it goes from left to right 6/2 = 3 1+2 = 3 3*3 =9 [link to en.wikipedia.org] First: Today, parentheses or brackets are used to explicitly denote precedence by grouping parts of an expression that should be evaluated first. Then: The order of operations used throughout mathematics, science, technology and many computer programming languages is expressed here:[2] exponents and roots multiplication and division addition and subtraction This means that if a mathematical expression is preceded by one operator and followed by another, the operator higher on the list should be applied first. Mnemonics (like PEDMAS) may be misleading ...especially if the user is not aware that multiplication and division are of equal precedence, as are addition and subtraction. |
Anonymous Coward User ID: 39030376 United States 06/11/2013 05:20 AM Report Abusive Post Report Copyright Violation | The correct answer is 9. Arithmetic Order of Operations: Rule 1: First perform any calculations inside parentheses. Rule 2: Next perform all multiplications and divisions, working from left to right. Rule 3: Lastly, perform all additions and subtractions, working from left to right. |
Possum User ID: 41046141 Australia 06/11/2013 05:23 AM Report Abusive Post Report Copyright Violation | This thread is still going!?*^)$ WOW :o There is no need for temples, no need for complicated philosophies. My brain and my heart are my temples; my philosophy is kindness. Dalai Lama Anyone who doesn't take truth seriously in small matters cannot be trusted in large ones either. Albert Einstein The kingdom of God is within you and all around you. It is not within buildings of wood or stone. Split a piece of wood and you will find me. Look beneath a stone and I am there. Stigmata |
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Anonymous Coward User ID: 56176204 United States 04/28/2014 08:23 AM Report Abusive Post Report Copyright Violation | Alright, there's a lot of self-proclaimed experts around these parts. Let's see how your logic holds up against some basic mathematics. Quoting: Syrius 6÷2(1+2) = ? I'll give two hints. This is NOT a trick question, and there is only 1 correct answer. All tools used for computation are fair game. (Yes, I saw this somewhere else and decided to post it here.) Best of luck to all you geniuses . 3 |
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Anonymous Coward User ID: 1478493 United States 04/29/2014 12:04 AM Report Abusive Post Report Copyright Violation | Otherwise just go left to right. Example: 30 ÷ 5 × 3 = 6 × 3 = 18 yes 30 ÷ 5 × 3 = 30 ÷ 15 = 2 no (wrong) Divide and Multiply rank equally (and go left to right). [link to www.mathsisfun.com] |
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