2x + 3y = 6
x -y = 3
Tentukan penyelesaian dan himpunan SPLDV dengan menggunakan metode subtitusi :
2x + 3y = 6 dan x -y = 3
x=3 + y
2 (3+y)+3y= 6
6+2y+3y = 6
6+5y=6
5y=6-6
5y=0
y= 0 :5 = 0
x-0= 3
x=3+0
x=3
koreksi lagi yah 😀
2x + 3y = 6
x – y = 3
-y = -x + 3
y = x – 3
3 (x – 3) + 2x = 6
3x – 9 + 2x = 6
5x = 6 + 9
5x = 15
x = 15/5
x = 3
x – y = 3
3 – y = 3
-y = 3 – 3
-y = 0
y = 0