Question 19320
To start this problem, solve the third equation for z:

{{{4z = -8}}}
{{{z = -2}}}


Now, plug -2 in for z in the second equation to get:

{{{2y - 3(-2) = 4}}}
{{{2y + 6 = 4}}}
{{{2y = -2}}}
{{{y = -1}}}

Finally, plug -2 in for z AND -1 in for y in the first equation and solve for x:

{{{2x - 3(-1) + 5(-2) = -5}}}
{{{2x + 3 - 10 = -5}}}
{{{2x - 7 = -5}}}
{{{2x = 2}}}
{{{x = 1}}}

Your final answers would be x=1; y=-1; x=-2.