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AB and BC share point B to form AC. If AC=7 and BC=5, then what is the length of AB?
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AB and BC share point B to form AC. If AC=7 and BC=5, then what is the length of AB?

User Cocogorilla
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2 Answers

3 votes
A B C
The whole segment is AC,AC=7,BC=5.
AB=?
AC-BC=AB
7-5=2
User David Miani
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8.3k points
2 votes

|AC|=7;\ |BC|=5\\\\|AC|=|AB|+|BC|\\\\|AB|+5=7\ \ \ \ \ |subtract\ 5\ from\ both\ sides\\\\\boxed
AB and BC share point B to form AC. If AC=7 and BC=5, then what is the length of AB-example-1
User Micadelli
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