Respuesta :

Answer:

51.

Step-by-step explanation:

Finding the prime factors:

153 = 3 * 3 * 17

204 = 2 * 2 * 3 * 17

357 = 3 * 7 * 17

3 * 17 is common to all three sets of factors.

So the greatest common factor (GCF) = 3*17 = 51.

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