Question

HP dari :
2x + 3y - 6z = 2
4x - 3y = 7

Answer 1

2x+3y-6z=2 (1)
4x-3y=7        (2)
___________+
6x-6y=9 ⇔ 2x-2y=3 ⇔ x-y=3/2 ⇔ x=3/2+y (3)

(3) kita substitusikan ke (1) diperoleh
2x+3y-6z=2 ⇔ 6z=2x+3y-2 ⇔ 6z=2(3/2+y)+3y-2 ⇔ 6z=3+2y+3y-2 ⇔ 6z=1+5y ⇔ z=1/6+5/6z

HP={(x.y,z)}={y|(3/2+y,y,1/6+5/6z), y∈bilangan real}

Semangat!