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sveticcg [70]
3 years ago
15

12r - 18 = 13r + 18 please help

Mathematics
2 answers:
Tomtit [17]3 years ago
5 0
12r - 18 = 13r + 18
13r - 12r - 18 = 13r + 18 - 13r
-1r - 18 + 18 = 18 + 18
-r = 36
36/-1
r= -36
Ugo [173]3 years ago
3 0
I am assuming you want to find r. r = -36
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Andreas93 [3]

Answer:

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Step-by-step explanation:

The domain of a rational function is all real numbers <em>except </em>for when the denominator equals 0.

So, to find the domain restrictions, set the denominator to 0 and solve for x.

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Set the denominator to 0:

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Subtract 9:

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In interval notation, this is:

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