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25-02-2016
Mathematics

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if (a,b) is an ordered pair for x-y=5, is (b,a) also a solution?

Respuesta :

25-02-2016

The answer is no. Because solution (a,b) means x=a, y=b.and we have a-b=5. And (b,a) would mean x=b and y=a but then x-y=b-a=-(a-b)=-5≠5. So the pair (b,a) is not a solution.

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