Resposta :

1. {12}{16} = {3}{4}

2.{32}{40} = {4}{5}

3.{12}{36} = {1}{3}

4.{63}{99} = {7}{11}

5.15}{45} = {1}{3}

6. {21}{49} = {3}{7}

7. {12}{72} = {1}{6}

8.{200}{300} = {2}{3}

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