What do you suppose is true about a sum added to its opposite?
1 answer:
Opposite number, also called the additive inverse, is by defition a number that if you add it to its opposite, the result will be 0!!!
so you know that a number added to its opposite will be 0!
in practice this means that it's the same value with the opposite sign.
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First 1 trust me on this hope this help
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