5x-2y=3 -x-y=5 selesaikan dengan menggunakan rumus PLDV Eliminasi

5x-2y=3 |x1
-x-y=5 |x2
__________
5x-2y=3
-2x-2y=10
__________-
7x=-7
x=-1

-(-1)-y=5
1-y=5
-y=5-1
-y=4
y=-4

5x -2y = 3....(1
-x - y = 5....(2).eliminasi x, maka (2) × 5
-5 x - 5y = 25
5x -2y = 3
--------------- +
- 7y = 28
y = 28/-7
y = -4
eliminasi y, maka (2) × 2
-2x - 2y = 10
5x - 2y = 3
---------------- -
-7x = 7
x = 7/-7
x = -1
HP = { (-1, -4 ) }