Question 507624
Let {{{L}}} be the amount of money Leo has, {{{K}}} Karen, and {{{R}}} Ress.
1.{{{L=K+8}}}
2.{{{K=15+R}}}
3.{{{L+K+R=59}}}
Subsititute from 1 and 2 into eq. 3,
From 1,
{{{L=K+8}}}
{{{L=(15+R)+8}}}
{{{L=R+23}}}
Now substitute,
{{{L+K+R=59}}}
{{{(R+23)+(R+15)+R=59}}}
{{{3R+38=59}}}
{{{3R=21}}}
{{{highlight(R=7)}}}
Now that you know {{{R}}} work backwards.
From 2, 
{{{K=15+R}}}
{{{K=15+7}}}
{{{highlight(K=22)}}}
From 1,
{{{L=K+8}}}
{{{L=22+8}}}
{{{highlight(L=30)}}}