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well, if you do 2 + 2 it equals 4, 4 is your answer hope you understand!
Draw a number line. Look for the number 2. Move 2 units to the right. The number where you arrive is the answer!
Omg zehanz awesome response

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Just explaining, you know...
dont get smart !
Just messing around :P
A number line can be used to find the sum of two real numbers.
And because 2 and 2 are real numbers, it works!
You can use the same method for -2 + (-2) for the same reason.

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