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-4x + 6Y= -18
4x - 3Y= 8
simplificamos y queda:
6Y = -18
-3Y=8
sumamos los términos:
3Y =- 10
Y= -10
3
y para x múltiplicamos el primero por -1:
-2x +3Y= -9
4x -3Y= 8
-2x= -9
4x=8
2x= -1
x= -1
2