Question 751915
Let me try to LEAD you to the answer without finally answering this for you.


The given equations of the system(?):
{{{2x-8y=5}}}
{{{-6x+24y=15}}}


The second equation, {{{-1*2*3*x+3*8*y=3*5}}}
{{{(3)*(-2x+8y)=3*5}}}
{{{-2x+8y=5}}}
And perform multiplication of both sides by -1,
{{{2x-8y=-5}}}.


Now, your system of equations really is this:
-----------------
{{{highlight(2x-8y=5)}}}
and
{{{highlight(2x-8y=-5)}}}
----------------


What does that tell you?