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1) - 10x + 9y = - 47 (6)
2) 6x - 5y = 27 (10)
- 60x + 54y = - 282
60x - 50y = 270
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0x + 4y = - 12
4y = - 12
y = -12/4
y = - 3
Sustituyo el valor de y en ecuación 2
6x - 5y = 27
6x - 5 (- 3) = 27
6x + 15 = 27
6x = 27 - 15
6x =12
x = 12/6
x = 2
Solución :
x = 2
y = - 3