Hola
3/4 amplificada por 7= 21/28 (3×7 y 4×7).
21/28
Procedimiento
3 x 7 = 21
4 x 7 = 28
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Hola
3/4 amplificada por 7= 21/28 (3×7 y 4×7).
Respuesta
21/28
Procedimiento
3 x 7 = 21
4 x 7 = 28