Question 704897
n is a number;
618+3n,
When -(618+3n)+n^=136.

n^2-3n-618=136
n^2-3n-618-136=0
n^2-3n-754=0

{{{n=(3+sqrt(9-4*(-754)))/2}}} or {{{n=(3-sqrt(9-4*(-754)))/2}}}, only one of them would work.