Question 639067
{{{(3n^2 + 2n^2 + 18n) / 6n^2 }}}


{{{(5n^2 + 18n) / 6n^2 }}}

{{{n(5n + 18) / 6n^2 }}}

{{{cross(n)(5n + 18) / 6n^cross(2) }}}

{{{(5n + 18) / 6n }}}

{{{5n/6n + 18/6n }}}

{{{5cross(n)/6cross(n) + cross(18)3/cross(6)n }}}

{{{5/6 + 3/n }}}

now, you can set expression equal to zero and calculate {{{n}}}

{{{5/6 + 3/n=0 }}}

{{{3/n=-5/6 }}}

{{{3=-(5/6)n }}}

{{{-3/(5/6)=n }}}

{{{-3*6/5=n }}}

{{{-18/5=n }}}