Mathematics: Simplify by combining like terms. -3r - 2r - 6 - 1 - 7r+ 9r

Simplify by combining like terms. -3r - 2r - 6 - 1

Ответ:

raven76

12.03.2021

Mathematics

−3r−7

Step-by-step explanation:

I got it of the web.

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Ответ:

morgeron6071

07.12.2020

Mathematics

Using the factorial notation of the permutation formula, we get:

$nPr = \frac{n!}{(n - r)!}$
$28P7 = \frac{28!}{(28 - 7)!}$
$= 28 \cdot 27 \cdot 26 \cdot 25 \cdot 24 \cdot 23 \cdot 22$
= 5 967 561 600

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Simplify by combining like terms.
-3r - 2r - 6 - 1 - 7r+ 9r

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