Answer :

luana
[tex]x-\ number\\\\ \frac{x-9}{2}=4\ \ \ |Multiply\ by\ 2\\\\ x-9=8\ \ \ |Add\ 9\\\\ x=17\\\\Number\ is\ 17.[/tex]
mariamikayla
[tex](x-9):2=4 \\\\ x-9=4*2 \\\\ x-9=8 \\\\ x=8+9 \\\\ \boxed{x=17}[/tex]

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