Question 1103803
x, the smaller number


The description:  {{{x(x+1)=39+9(x+1)}}}


Simplify and solve.


{{{x^2-8x-48=0}}}

{{{(x+4)(x-12)=0}}}

For positive results, {{{ highlight(x=12)}}} and {{{highlight(x+1=13)}}}.