Question 1073826
-5x-3y+6z=-26.........1
X+2y-2z=8    ........2
5x-4y+3z=12  ...........3


adding eqn 1 & 2 X 5
 
7y-4z=14  .....4

Adding eqns 1 & 3

-7y+9z=-14 .........6

adding eqns 4& 5

5z=0
or z=0

from eqn 4

y=2

from eqn 1
x=4