Adding doubles mean that the result will be obtained by adding 2 times of the numbers.
According to the question,
We have the following information:
We have to know what does it mean to add doubles.
Now, we know that doubles mean that the same number is added two times or in other words it has been multiplied by 2.
For example, the double of 3 is 6 and the double of 4 is 8 because we have multiplied both the numbers by 2.
Now, adding the doubles of 3 and 4 means that we will add 6 and 8 and the result in this case is 14.
Hence, adding doubles mean that the result will be obtained by adding 2 times of the numbers.
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