Quote:
Originally Posted by wdfifteen
If by mistake you mean mistake in the presentation of the problem, I agree.
If commonly accepted symbols for operations are arbitrarily redefined, the all of the commonly accepted symbols for operations are open to redefinition. Under these circumstances, why assume ( x+xx ) means three numbers and an addition operation are inside brackets? Why assume there is a set of brackets at all? The left bracket could have one meaning the +could have another meaning, and the end bracket could have yet another meaning. I understand this as an exercise in logic and deduction, but mixing redefined common symbols for operators with arbitrary meanings for operators is just chaos.
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Don't agree with you (usually) on a political level, but I'm 100% with you on this one, WD!