Perform operations in parentheses or other grouping symbols.
Evaluate exponents or roots.
Working from left to right, perform multiplication and division steps.
Working from left to right, perform addition and subtraction steps.
To remember these steps, many people memorize this acronym, or memory trick: Please Excuse My Dear Aunt Sally (PEMDAS). The letters stand for parentheses, exponents, multiplication, division, addition, and subtraction.
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