Question 1192644
<pre>
Sheila         x
Kerry          k
Jack           j
</pre>
{{{system(x+k=27,x+j=38,k+j=33)}}}


Add corresponding members.
{{{2x+2k+2j=27+38+33}}}

{{{2(x+k+j)=98}}}

{{{highlight_green(x+k+j=49)}}}


Using equation 1 of the main system, and subtract from this highlited equation, will give the value for j.

{{{(x+k+j)-(x+k)=49-27}}}

{{{highlight(j=22)}}}