3 1 2x 5y 7 July 8, 2019 16 32 64 128 2x 1 7 5y 3 3 12 2x 5y 1 6x 7y 3 2x 5y 1 6x 7y 3 metodo de igualacion 2x 5y 1 6x 7y 3 metodo de reduccion
