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.
While I never failed a math class, I also never went past high school. When would your presumptions NOT be true?
Some forms of programming syntax, although there are the fringe cases where an equation (or function in programming) is represented by a symbol in conjunction with a parentheses input.
For example:
y(x) = 2*x+3
5+y(1) = 10, as 1 is substituted in for x in the prior equation.
And in some languages a number can be used as a name of a variable or a function, so it can be anything really
Not in most programming languages, though. You cannot start names with a number. Unless you're using some strange character that merely looks like a number, anyways. Programming with unicode can get weird but generally works without issue these days.
Wouldn't we just assume function expressions are always "in parenthesis"? Then it's just a substitution and no rules were changed.