Explicación paso a paso:
E= (1)(2)-(3)(1)+(3)(3)-(1)(3)
E=2-3+9-3
E= -1+6
E=5
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Explicación paso a paso:
E= (1)(2)-(3)(1)+(3)(3)-(1)(3)
E=2-3+9-3
E= -1+6
E=5