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Ejercicios resueltos<br />
2 cebras + 2 = 4<br />
1 carro + 2 = 3<br />
3 cajas + 2 = 5<br />
2 cometas + 2 = 4<br />
2 pulpos + 1 = 3<br />
2 lámparas + 2 = 2