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Use △GHJ, where A, B, and C are midpoints of the sides. When GH = 7z−1 and CB = 4z−3, what is GA?

Use △GHJ, where A, B, and C are midpoints of the sides. When GH = 7z−1 and CB = 4z-example-1
User Jason Hoch
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it’s 17, i just happen to know
User David Tobiano
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