blh bantu jawabpin ga kak>3
Himpunan penyelesaian dari 3x – 5y + 13 = 0 dan 4x + 3y – 2 = 0 adalah….
3x – 5y + 13 = 0
•3x – 5y = -13 …… pers 1
4x + 3y – 2 = 0
•4x + 3y = 2 …… pers 2
Eleminasi pers 1 dan 2
3x – 5y = -13 |×3|
4x + 3y = 2 |×5|
9x – 15y = -39
20x + 15y = 10
———————- (+)
29x = -29
x = -1
Subtitusi x ke pers 1
3x – 5y = -13
3(-1) – 5y = -13
-3 – 5y = -13
-5y = -13 + 3
-5y = -10
y = -10/-5
y = 2
HP = {(-1, 2)}