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Instead of following PEMDAS, they decided to multiply 9 and 5, leaving them with the flawed expression 45 ÷ 45. Instead of this faulty method, you must remember that multiplication and division ...
PEMDAS is an acronym for the order of operations to solve an equation. Anything inside parenthesis (P) should be worked out first. Secondly, exponents (E) should be addressed.