One example of partitioning a unit of something is let's say 80 which is also the same as saying 70+10.
This is defined a mathematical term which is used as a way of writing n as a sum of positive integers. it involves splitting a number into different components which also amount to the same value when they are computed properly
This is done so as to make it easier for different types of numbers to be worked with and reduces the possibility of ambiguity when solving for different types of solutions. Examples include the following shown below:
This is therefore the reason why it was chosen as the most appropriate choice.
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