Nilai x yang memenuhi sistem persamaan 2x + 3y =23 dan 3x + 4y = -8 adalah..

2x + 3y = 23|× 4
3x + 4y = - 8|× 3

8x + 12y = 92
9x + 12y = - 24
___________—
- x = 116
x = - 116

2x + 3y = 23
- 232 + 3y = 23
3y = 23 + 232
3y = 255
y = 85

Maaf Kalau Salah

2x + 3y = 23 | x3 |
3x + 4y = -8 |x 2|

6x + 9y = 69
6x + 8y = -16
___________-
0 + y = 85
y = 85

2x + 3y = 23
2x + 3(85) = 23
2x + 255 = 23
2x = -255 + 23
2x = -232
x = -232/2
x = - 116