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

$x \in \phi$
(there are no values of $x$ for which this is true)
{: (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.