3x-2y=6 dan x+y=4 metode subtitusi dan eliminasi

metode substitusi
3x-2y=6............1
x+y=4..............2

x+y= 4
x = 4-y..........3

pers 3 masukkan ke pers 1
3 (4-y)-2y=6
12-3y-2y=6
-5y=-6
y=6/5

x=4-y
   = 4-6/5
   = 16/5

Eliminasi
3x-2y=6 x1 =3x-2y=6
x+y=4 x3. =3x+3y=12 -
-5y=-6
y=6/5
Substitusi ke pers 1/ 2, ambil pers 2 yg mudah
x+y=4
x+6/5=4
5.x+5.6/5=4
5x+6=4
5x+6-6=4-6
5x=-2
5x/5=-2/5
x=-2/5

HP{(-2/5, 6/5)}