4 years ago

Let a and b be rational numbers. Is a+b rational or irrational?

1 answer:

8 0

Answer:

a + b is rational too.

a = c/d ; b = e/f

a + b = c/d + e/f = (c·f + d·e)/(d·f)

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Now, let's simplify:

$undefined$

Blank 1:

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Blank 2:

$undefined$

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