The order of operations is the order in which arithmetic operations are performed. If the order of operations was not set by convention the value of 3 + 2·5 could be evaluated as (3 + 2)·5 = 25 or 3 + (2·5) = 13.
The order of operations established by mathematicians is:
Please stands for parenthesis.
excuse stands for exponents.
my dear stands for multiplication and division.
Aunt Sally stands for addition and subtraction.
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