Respuesta:
(x,y)=(-1,-1)
Explicación paso a paso:
7x-15y=18
1-x-6y=8
-x-6y=7
-7x-42y=49
-57y=57
y=-1
-x-6x(-1)=7
x=-1
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Respuesta:
(x,y)=(-1,-1)
Explicación paso a paso:
7x-15y=18
1-x-6y=8
7x-15y=18
-x-6y=7
7x-15y=18
-7x-42y=49
-57y=57
y=-1
-x-6x(-1)=7
x=-1