(spltv) 2y - 3z = -7, x + y = 1, 3x + 2z = 6

2y - 3z = -7
 x + y = 1  .................... y = 1 -x
3x + 2z = 6


y = 1 -x substitusi ke 2y - 3z = -7
2(1-x)  -3z =-7
2 - 2x -3z =-7
-2x-3z = -7-2
-2x-3z = -9

eliminasi -2x-3z = -9 dan 3x + 2z = 6

-2x-3z = -9 ......(x3)
3x + 2z = 6 ......(x2)
maka
-6x -9z = -27
6x +4z =12
----------------- +
-5z = -15
z = -15/-5
z = 3

shg 2y -3z =-7
2y -3(3) =-7
2y -9 = -7
2y = -7+9
2y = 2
y = 1

x+y = 1
x+1=1
x = 1-1
x =0

jadi x= 0, y=1, z =3