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1) 4x - 7y = 26 (-3)
2) 3x - 6y = 24 (4)
Multiplicamos las ecuaciones por los números indicados.
-12x + 21y = -78
12x - 24y = 96
-----------------------
0x - 3y = 18
-3y = 18
y = 18/6
y = -6
Reemplazo y = -6 en ecuación 2.
3x - 6y = 24
3x - 6 (-6) = 24
3x + 36 = 24
3x = 24 - 36
3x = -12
x = -12/3
x = -4
Solución :
y = -6
x = -4