this post was submitted on 27 Nov 2025
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Presuming PEMDAS is our order of operations and the 5 next to the parentheses indicates multiplication...
2+5(8-5) -> 2+5(3) -> 2+15=17
Other than adding a multiplication indicator next to the left parentheses for clarification (I believe it's * for programming and text chat purposes, a miniature "x" or dot for pen and paper/traditional calculators), this seems fine, yeah.
...I worry about how many people may not understand how to solve equations like these.
I prefer BM-DAS, no one's out here doing exponents, and no one calls brackets "parentheses"...
The way I was taught growing up, brackets are [these]. Parenthesis are (these).
Yes, technically the latter are also brackets. But they can also be called parenthesis, whereas the former is exclusively a bracket. So we were taught to call them separate words to differentiate while doing equations.
I'm a theoretical physics grad student and a night school maths teacher, I have never heard this distinction. People in academia around me call them round and square brackets.
It's a US vs UK (and probably others) distinction. The ( ) are almost never called brackets in the US, unless it's a regional thing I'm not aware of. Also the [ ] didn't get used in any math classes I was in the US up through calculus except for matrices.
Interesting! Nobody at my institute is a native English speaker. They're from several European and some Asian and south American countries.