Easy looking equation sees people fight over the answer - can you solve grade school math sum in 30 seconds?

The viral math problem has X users stumped - but the answer comes in lessons learned in fifth or sixth grade.

Math problem divides people as they struggle to solve sum - can you remember the 'golden rule'?

The acronym is also remembered by using the phrase 'Please, Excuse, My, Dear, Aunt, Sally' to remind students of the starting letters within the abbreviation. If you're having trouble, start with ...