Question 1162120
<pre>
{{{system(1/x +1/y =5,
1/y +1/x =1)}}}

In the second equation, reverse the terms on the left:

{{{system(1/x +1/y =5,
1/x +1/y =1)}}}

Subtract the equations term-by term:

{{{0 +0 =4)}}}

{{{0=4}}}

That's false so there is no solution.

Edwin</pre>