Where I live, this would be considered juxtaposition

Not just where you live, everywhere, in Maths textbooks. Adults forgetting the rules (and unqualified U.S. teachers not teaching what's in the textbooks) is another matter altogether.

According to me, talking about the origin of the 0.999…

Right. So not according to the meme, which doesn't tell us where the 0.999... comes from. Nor the 1 - could be an integer, floating point, or an estimation. Thanks for playing.

not taught yet

What do you mean not taught yet? There's nothing in the meme to indicate this is a primary school problem. In fact it explicitly has a picture of an adult, so high school Maths is absolutely on the table.

There is no method by which basic arithmetic and decimal notation can turn 0.999… into 1.

In high school we teach that they are the same thing. i.e. limits of accuracy, 1 isn't the same thing as 1.000..., but rather 1+/- some limit of accuracy (usually 1/2). Of course in programming it matters if you're talking about an integer 1 or a floating point 1.

If someone uses these systems as they were taught, they will get told they’re wrong for doing so

The only people I've seen get things wrong is people not using the systems correctly (such as the alleged "proof" in this thread, which broke several rules of Maths and as such didn't prove anything), and it's a teacher's job to point out how to use them correctly.

P.S.

“We do it like that, therefore, it is right”

Yep, Maths teachers do it right. :-)

X times 10 is 10x

10x is 9.9999999....

As I said, they didn't substitute on both sides, only one, thus breaking the rules around rearranging algebra. Anything you do to one side you have to do to the other.

P.S. you proved my point

The only people who think there’s something wrong with PEMDAS are people who have forgotten one or more rules of Maths.

those systems are giving an incorrect answer

When there's an incorrect answer it's because the user has made a mistake.

Instead of telling those people they’re wrong

They were wrong, and I told them where they went wrong (did something to one side of the equation and not the other).

Maths teachers are constantly wrong about everything

Very rarely wrong actually.

the abomination that is PEMDAS

The only people who think there's something wrong with PEMDAS are people who have forgotten one or more rules of Maths.

The rules and the acronyms describe different things.

No, they don't.

If you have to make more rules to say M and D are the same,

I didn't make more rules - that's the existing rules. Here's one of many graphics on the topic which are easy to find on the internet...

…that’s one of the two examples you used?

Yes. Did you try looking for one and ramping it up to the most difficult level? I'm guessing not.

IT IS AMBIGUOUS IN THIS POST

No, it isn't. Division before subtraction, always.

ALL EXAMPLES I HAVE SHOWN

None of those have been ambiguous either, as I have pointed out.

That is the problem at hand.

The problem is people not obeying the rules of Maths.

There is no real problem solving in trying to decipher poorly written shit

It's not poorly written. It's written the exact way you'd find it in any Maths textbook.

You are adding more rules

I'm stating the existing rules.

If all that matters is higher orders first

I don't even know what you mean by that. We have the acronyms as a reminder of the rules, as I already said.

I know operators apply to the numbers to their right.

If you know that then how did you get 2-2+2=-2?

With 2/22, you don’t know if it is 22/2, or 2/(2*2)

Yes you do - left associativity. i.e. there's no brackets.

When you are dividing by numbers, you put them all in the denominator

Only the first term following a division goes in the denominator - left associativity.

BY CONVENTION, as I said. You don’t have to repeat what I said a second time.

I didn't. You said it was a convention, and I corrected you that it's a rule.

It’s not like you could have tried in your head different orders to combine 3 numbers.

addition first

2-2+2=4-2=2

subtraction first

2-2+2=-2+2+2=-2+4=2

left to right

2-2+2=0+2=2

3 different orders, all the same answer

Even your “BODMAS” isn’t universal, lots of people learn “PEMDAS” or “BEDMAS”

The rules are universal, only the mnemonics used to remember the rules are different

except for facebook and twitter

... and high school Maths textbooks, and order of operations worksheet generators, and...

2/2*2 It is 0.5 or 2 depending on order.

It's always 2. #MathsIsNeverAmbiguous

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