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1) 5x - 6y = - 2 (8)
2) 2x + 8y = 80 (6)
40x - 48y = - 16
12x + 48y = 480
------------------------
52x + 0y = 464
52x = 464
x = 464/52
x = 116/13
Reemplazo x = 116/13 en ecuación 1.
5x - 6y = - 2
5 (116/13) - 6y = - 2
580/13 - 6y = - 2
- 6y = - 2 - 580/13
- 26 - 580 - 606
- 6y = --------------- = ----------
13 13
- 6y = -606/13
y = -606/13/-6/1
y = -606/-78
y = 101/13
Solución :
x = 116/13
y = 101/13