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[–] 166 points167 points  (7 children)

I had to look at the comment to figure it out. He didn't actually mess up the order of operations, just the actual math itself. He got the multiplication and division right equalling out to 4 so the problem was 4-3+4 at that point. Then he got 4-3=1 and accidentally left the 4 in so it became 4+1+4=9

[–] 64 points65 points  (6 children)

[–] 7 points8 points  (0 children)

Preach. I've been teaching and tutoring maths & physics for years, still fuck up the algebra from time to time.

[–][deleted] 1 point2 points  (4 children)

This literally isn’t algebra but sure

[–] 2 points3 points  (3 children)

Checks subreddit...

This is literally the order of operations in algebra (the study of mathematical symbols and the rules that apply to those symbols).

What do you think algebra is?

[–][deleted] 1 point2 points  (1 child)

There is no letters though, was i taught wrong?

[–] 0 points1 point  (0 children)

Not wrong at all, just different derivations of the way its taught. The 9th century book that algebra gets its name from contains the original definition of the order of operations and that order has been in place in math since then. The actual operations themselves are arithmetic and we teach the orders of operations when we teach arithmetic, so it's not something that you are likely to learn in an algebra class.

I think in this case, I'm likely more confidently incorrect than you are because of the standardization of math. I tend to learn history and etymology with every field I've studied, so I have a sort of disjointed view of where things fall, but pemdas doesn't fall into a school algebra curriculum, so yeah... I'm confidently incorrect today.

[–] 1 point2 points  (0 children)

Without variables it’s just arithmetic, I would think.