5x-3y=26,4y+3z=-17,dan3x+5z=-3

pers ( 1) dikalikan 4,pers (2) dikalikan 3
20x-12y=104
9z+12y= - 51
------------------ +
20x+9z=53.... pers (4)

pers (3) dikalikan 20, pers (4) dikalikan 3
60x+100z= - 60
60x+27z= 156
—----------------- -
73z= - 216
z= - 3

4y+3(-3)=-17
4y-9= - 17
4y= - 8
y= - 2

5x-3(-2)=26
5x+6=26
5x=20
x=4