Question 307960
1.{{{5x-2y = -24}}}
  2.{{{-4y = -48 - 10x}}}
From eq. 2,
{{{  -4y = -48 - 10x}}}
{{{-2y=-24-5x}}}
Substitute directly into eq. 1 and solve for x.
{{{5x-2y = -24}}}
{{{5x+(-24-5x)=-24}}}
{{{5x-24-5x=-24}}}
{{{-24=-24}}}
Your equations lead to a true statement.
They are the same equation (the same line) hence they have an infinite number of solutions. 
Every solution of eq. 1 is a solution of eq. 2.
 
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{{{ graph( 300, 300, -20, 20, -20, 20, (-48-10x)/(-4), (5x+24)/2) }}}