The sum of two rational numbers is -8. If one of them is−/
, find
the other
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- adding two rationals is the same as adding two such fractions, which will result in another fraction of this same form since integers are closed under addition and multiplication.
- by starting with 1, we get the sum 1 + 1/ 1 = 2. ... That is, if x is a rational number such that x2 is an integer ... If n ≥ 3, then 2n − 1 ≥ 5, hence ... or 4, or 5 (or any other integer)
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