Question

Tentukan hp dengan metode subsitusi

Answer 1

substitusi 1&2

x+y+z=2

2x-y+3z=-3

→2x+2y+2z=4

→2x-y+3z=-3

3y-z=7 ...(1)

substitusi 1&3

x+y+z=2

x+2y-2z=7

-y+3z=-5 ...(2)

substitusi persamaan 1&2

3y-z=7

-y+3z=-5

→9y-3z=21

→-y+3z=-5

8y=16

y=2

-y+3z=-5

-2+3z=-5

3z=-3

z=-1

x+y+z=2

x+2-1=2

x=2-1

x=1

hp{-1,1,2}

maaf klo salah ya