What two numbers add up to sixty three?

Answer 1

Any number and 63 minus that number.

Here are a few examples that will help you visualize this concept.

63 = 4+59, (63-4=59)

63 = 37+26, (63-37=26)

63 = (-10)+73, (63-(-10)=73)

Simple enough, right?

Here's another way to represent this:

X + (63-X) An algebraic representation of the answer to the question

X - X + 63 Equation rearranged according to the Commutative and Associative properties of Addition and Subtraction. The X's cancel and you get 63!