Respuesta :

Answer:

4/7

Step-by-step explanation:

2 1/4 = 1 2/7 ÷ x

x = 1 2/7 ÷ 2 1/4

= 9/7 ÷ 9/4

= 9/7 × 4/9

= 36/63

= 4/7

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