Answer :

luana
[tex]x-searched\ number\\\\\frac{1}{2}x+3=17-3x\\\frac{1}{2}x+3x=17-3\\3\frac{1}{2}x=14\\x=4[/tex]

(n/2)+3=-17n

(n/2)+17n=-3

17.5n=-3

(35*n)/2=-3

35n=-6

n=(-6)/35