Respuesta :

Answer:

84

Step-by-step explanation:

72/x = 6/7

muliply by x on both sides

72 = 6/7x

mulitply by 7 on both sides

504 = 6x

divide by 6 on both sides

84

Answer:84

Step-by-step explanation:

6*12=72

7*12=84

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