What is the sum of 42 and 63?

What does it mean when someone asks you for the sum of 42 and 63? The sum is part of the addition equation displayed below.

addend + addend = sum

When someone asks "What is the sum of 42 and 63?" they mean that 42 is an addend and 63 is an addend in an addition equation.

Therefore, as you may have inferred, the sum of 42 and 63 is the same as 42 plus 63. Here is the addition equation with the answer:

42 + 63 = 105

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What is the sum of 42 and 64?
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