How do you solve and write the following in interval notation: 8 (x - 9) >7 (x - 9) + x?

1 Answer
Alan P.
Sep 8, 2017

x in phi
(there are no values of x for which this is true)

Explanation:

{: (8(x-9),color(white)("XX")>color(white)("XX"),7(x-9)+x), (8x-72,color(white)("XX")>color(white)("XX"),8x-63), (-72,color(white)("XX")>color(white)("XX"),-63) :}
There is no possibility that any value of x would make this true.

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