Question

Himpunan Penyelesaian
x+y-2=24
2x+y-2z=18
x+2y-3z=30
Adalah(x,y,z). x:y:z=...

Answer 1

X+y-2=24.
x+y=24+2
x+y=26

2x+y-2z=18
2x+y-2(-2) =18
2x+y=18-4
2x+y=14

X+2y-3z=30
X+2Y-3(-2)=30
X+2Y=30-6
X+2Y=24

x+y=26
x+2y=24
—————— –
-y=2
y=-2

2x+y-2z=18
2x-2+4=18
2x=18-4+2
2x=16
x=8

x:y:z= 8:-2:-2