elscrappy elscrappy

05-09-2017
Mathematics

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Two numbers have a sum of -9. One number is x. What expression represents the other number?

Respuesta :

05-09-2017

assume that the other number is y.
we know that the addition of both number is -9
this means that:
x+y=-9
reorder this equation to seperate the y variable:
y=-9-x

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