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Three uniform-density spheres are positioned as follows: • A 4 kg sphere is centered at ‹...

Three uniform-density spheres are positioned as follows:
• A 4 kg sphere is centered at ‹ 12, 22, −6 › m.
• A 11 kg sphere is centered at ‹ 7, −18, 10 › m.
• A 12 kg sphere is centered at ‹ −9, 12, −15 › m.

What is the location of the center of mass of this three-sphere system?

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