<PRE><B>Question 1065493</B>
This , {{{y=3x-5y=5x+3}}},is not a well written single equation, but is saying that y is two different expressions.   


If you expect the two expressions for y to be equal, then you are trying to say  {{{3x-5y=5x+3}}}
{{{-5y=-3x+5x+3}}}
{{{5y=3x-5x-3}}}
{{{5y=-2x-3}}}
{{{y=-2x/5-3/5}}}-------Is this the line you mean?


Better, what is your complete problem description, exactly as it is given to you.  What equation are you really given?  Are you given two separate equations?</PRE>