Respuesta :

Answer:

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Step-by-step explanation:

Answer:x=9

Step-by-step explanation:

3x-20 is proportional to 56 by 1/8, exactly as the left side is. (I don’t remember the name of the theorem but you can look it up online.) Because of this you can determine that 3x-20 is 7, so 3x=27 and x=9.