Question 1209072
<pre>
That notation is not compatible with the HTML this site is written in,
but from what I've learned, it means make a fraction with s as the 
numerator and 2 as the denominator.
I won't solve it so another tutor can.

{{{system(s/t+5t=3,3t-6s=9+15t+11s)}}}

Edwin</pre>