Question

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Answer 1

Explicación paso a paso:

DOBLE

4/8=4/8×2/1=8/8=1

5/9=5/9×2/1=10/9

3/6=3/6×2/1=6/6

7/12=7/12×2/1=14/12

1/2=1/2×2/1=2/2

TRIPLE

4/8=4/8×3/1=12/8

5/9=5/9×3/1=15/9

3/6=3/6×3/1=9/6

7/12=7/12×3/1=21/12

1/2=1/2×3/1=3/2

CUADRUPLE

4/8=4/8×4/1=16/8

5/9=5/9×4/1=20/9

3/6=3/6×4/1=12/6

7/12=7/12×4/1=28/12

1/2=1/2×4/1=4/2

Si quieres lo simplificas