Consider an unknown language with integer and real types in which 1+2, 1.0+2, 1+2.0, and 1.0+2.0 are all legal expressions. Explain how this could be the result of coercion, using no overloading. Explain how this could be the results of overloading, using no coercion. Explain how this could result from a combination of overloading and coercion. Explain how this could result from subtype polymorphism, with no overloading or coercion.

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