Question 871867
This was already answered.  You wanted the system; the system was shown.

See here: <a href="http://www.algebra.com/algebra/homework/coordinate/word/Linear_Equations_And_Systems_Word_Problems.faq.question.871866.html">http://www.algebra.com/algebra/homework/coordinate/word/Linear_Equations_And_Systems_Word_Problems.faq.question.871866.html</a>


About your extra request, I just answered that too, a few minutes ago.  
<a href="http://www.algebra.com/algebra/homework/coordinate/Linear-systems.faq.question.871885.html">http://www.algebra.com/algebra/homework/coordinate/Linear-systems.faq.question.871885.html</a>