There is no such rank of operations. Pemdas have 4 ranks only:
I meant that they are the same… and thus left to right triumphs over order… this applies to mult/div and add/subtract
Please indicate where I specifically said how many ranks of operations are there. Hint I didn’t refer to how many are, merely spelled out clearly the meaning of the PEMDAS mnemonic acronym.There is no such rank of operations. Pemdas have 4 ranks only:
1. Parentheses
2. Exponentiation
3. Multiplication and division
4. Addition and subtraction
Operations of the same precedence are conventionally evaluated from left to right.
after wikipedia, and any other good math book. Multiplication have no precedence over division, and addition have no precedence over subtraction.
Of course, we could use Polish notation and never be in doubts anymore
Well… how do you try it? You actually made me curious as to how the result could be 1.
Well, if you got the operators wrong… you could have 3 x (3-3) = 0… + 3/3… cause you read the + wrong?
It's gotten worse from the 22% wrong when I first commented.
You have to do the multiplication and division first, then add and subtract. So...
Reread your second sentence. That should make you even sadder..."as a teacher".
No, because you're not adding 2 to 4. You're adding 2 to -4 (negative 4).
None of the operators are parenthetical. So, it's a linear equation.
I honest to whomever can't figure WTF is going on in this thread. Do you guys feel the need to be able to outsmart yourselves before you can try to outsmart each other? I thought you'd be all argued out by the end of page one. Oh well, I guess it's kudos to those with the literary stamina to turn a simple linear equation into a work of fiction. For example, where did the imaginary parentheses come from? If Arabians from long times past could read this thread, they'd turn over in their graves. Algebra? This problem don't need no steenking algebra.
Being a Brit, I totally agree with you. Just to poke a stick in the eye of our cousins across the pond...LOL
Where did the "-1" come from? I'm still hung up on the idea that you solve each side of the equation separately. Which gives you 6 as a dividend, and 6 as the divisor. AFAIK this "/" still means "divided by". Or, alternatively, it's often accepted that "/" signifies "over".
You're just still butthurt since we threw away all your useless "U's"
If you wanted to add 4 to 2, you would actually be adding -4 to 2 and it would become 6 - 2. What you have done is multiply 2 by -1. Here are your options:
Wow, OK you are not good at math.
This is why in engineering everything is properly bracketed so that their is no ambiguity. No one wants to lose a $75M rocket because someone misinterpreted an equation.
Except this wasn’t something ambiguous at all. It wasn’t something ambiguous like a/bc but rather a straightforward a x a - a/a + a. Primary school math.
It is ambiguous when they use the division sign and not '/', this is why no one in engineering uses it. In fact we are taught to avoid it at all cost from day 1. Either way I was immediately able to solve it in my head by just rearranging it 3x3 + 3 -1
I don’t disagree engineering strives for clarity (I’m a senior machinery/ automation/ testing engineer) but there’s nothing ambiguous about the division sign. It is still division and it still has precedence over addition and subtraction.
You're just still butthurt since we threw away all your useless "U's"
As in "colour", "favour", "flavour",
Most words ending in '-our' in British English end in '-or' in American English (color, flavor, honor, neighbor, rumor, labor, humor). Except for 'contour', 'velour', 'paramour' and 'troubadour' which are spelt the same everywhere.
Not to mention the fact y'all refuse to use the "Z" where it's absolutely called for.
"Fantasise", seriously?
(And if you're wondering, I did put that "y'all" in there just to annoy you).
If your engineers struggle with 4th grade math, you’ve got serious problems.
First off, "Z" is intended to be harsh. not to mention it's usefulness as onomatopoeia . How do the Brits categorize or illustrate human snoring? "SSSSSS", wouldn't really make it, now would it? It sounds more like water boiling for tea.Leaving out the 'u' renders the word charmless and characterless (pun intended). The 'z' is an abomination and adds an unintended harshness to the word.
Suppose we add those much vaunted parenthesis to the equation. In which case it would read:
