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You don’t have to be a math whiz to know that 4 - 2 + 1 equals 3. Yet I was working with several students recently who said it equals 1. And it wasn’t their fault. Nor was it their teacher’s fault.

The internet is torn over an elementary-level math equation, with people suggesting conflicting answers based on their approaches. X users have weighed in on the basic problem - but only a handful ...

At first glance, the problem appears easy enough. But while many users on X, formerly Twitter, quickly chimed in with answers, only a small number got it right - because only they remembered to apply ...