There is no known origin of the order of operations or PEMDAS. PEMDAS is considered as the proper way to tackle a given mathematical expression in terms of what operation should be performed first.
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Follow the order of operations; PEMDAS. PEMDAS is Parentheses, Exponents, Multiply, Divide, Add, & Subtract.
We don't who who the first person was but it was around 30,000 BC when tally marks were made on bones and things to represent numbers.
PEMDAS is math acronym that tells you in what order to work a problem. It stands for parentheses, exponents (powers/roots), multiply, divide, add, and subtract.
PEMDAS RULE IS parentheses,exponent,multiplication,division,addition,subtraction