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NOMBRE SUMA

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1/2 = UN MEDIO 1/2 + 2/5 = (1·5 + 2·2) / 2·5 = 9 / 10

2/3 = DOS TERCIOS 3/4 + 2/3 = (3·3 + 4·2) / 4·3 = 17 / 12

3/4 = TRES CUARTOS RESTA

2/5 = DOS QUINTOS ==============================

5/6 = CINCO SEXTOS 4/5 – 2/3 = (4·3 – 5·2) / 5·3 = 2 / 15

3/7 = TRES SÉPTIMOS 5/3 – 2/5 = (5·5 – 3·2) / 3·5 = 19 / 15

7/8 = SIETE OCTAVOS

F R A C C I O N E S