Respuesta:
-2 x +23
sumar
5x-7y+8
-4x-y+6
-3x+8y+9
_________
-2x+0+23
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Respuesta:
-2 x +23
sumar
5x-7y+8
-4x-y+6
-3x+8y+9
_________
-2x+0+23