Rounding up when the last digit is over 5 can artifically inflate the resulting number, particularly if you round at every intermediate calculation. In general, students are advised to maintain all digits throughout the calculation and to only round the final result.
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a rule used to solve math questions
In math, the purpose of Cramer's rule is to be able to find the solution of a system of linear equations by using determinants and matrices. Cramer's rule makes it easy to find a system of equations that have many unknown variables.
the definition of rule in math is what step you need to answer a question. what should you do to answer a problem.....you have to follow the rule to able to answer a problem..for example :-to find the area of a circle. you have to follow the formula of the circle . which is A= radius square pi. if u follow the rule your answer will be correct.....
It is a rule in math!