meaningfulmind
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- Mar 19, 2024
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I only get the answer one from the two different ways to solve. Isn’t there literally one right answer? I’ve always thought math was black and white
I only get the answer one from the two different ways to solve. Isn’t there literally one right answer? I’ve always thought math was black and white
The reason some people get 9 is that they have been taught to do multiplications and divisions from left to right, and follow that rule rigidly, unaware that in practice, many (if not most) users of algebra think of factors joined by juxtaposition as a single unit, effectively doing that multiplication first. So these people are following a different rule than you. Some authors explicitly teach "juxtaposition first"; but more, in my experience, just don't give examples like this, so students either follow what they were taught, or just do what feels right, when they see such an expression. (I don't know whether any textbooks explicitly teach that you should not make the distinction!)I only get the answer one from the two different ways to solve. Isn’t there literally one right answer? I’ve always thought math was black and white
Math is very much black and white. But a problem needs to satisfy certain requirements to be considered a _math_ problem.I only get the answer one from the two different ways to solve. Isn’t there literally one right answer? I’ve always thought math was black and white
When I see the ÷ operator used like that, then I interpret it as a fraction bar.9 ÷ 3(1 + 2)
If the "stated problem is:9÷3(1+2) =9÷3(3)
The answer is 9. Why would anyone here think otherwise.
If the "stated problem is:
9/3 * (1+2) then the answer is 3*3 = 9 ..........................No argument there.
If the "stated problem is:
9/{3 * (1+2)} then the answer is 9/9 = 1 ..........................No argument there.
If the problem is stated in "Neither" of those form (Like your problem is ) - then the problem is "non-sense" - like giving a problem to a Greek written Sanskrit.
Doktor, bullseye!!I assume you saw this somewhere and saw people give different answers.
The solution to this sort of problem is never to write ambiguous expressions, and not to take the bait when people ask about them.
Different people have different opinions about this sort of thing; some will say 9, and some (who I think are more reasonable) will say 1. Arguing about it gains nothing.