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CD bisects AB at D. If AD = 4x - 1 and DB = 9x - 21, find x.
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CD bisects AB at D. If AD = 4x - 1 and DB = 9x - 21, find x.

User Csabi
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\\ \ast\sf\hookrightarrow AD=DB


\\ \ast\sf\hookrightarrow 4x-1=9x-21


\\ \ast\sf\hookrightarrow 9x-4x=-1+21


\\ \ast\sf\hookrightarrow 5x=20


\\ \ast\sf\hookrightarrow x=(20)/(5)


\\ \ast\sf\hookrightarrow x=4

CD bisects AB at D. If AD = 4x - 1 and DB = 9x - 21, find x.-example-1
User Syamesh K
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