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If BC = 4x + 5 and AD = –3x + 26, find AD. A. 3 B. 17 C. 21 D. 31
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If BC = 4x + 5 and AD = –3x + 26, find AD. A. 3 B. 17 C. 21 D. 31

User Fram
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BC must be equal to AD, so 4x+5=-3x+26. You must get all common terms on one side, so 7x=21. then divide to get x alone, and x=3. 
User Max Tet
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