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Afina-wow [57]
3 years ago
12

I get pretty confused and I have a huge exam next week please help.

Mathematics
1 answer:
Alex Ar [27]3 years ago
7 0
From the angle bisector theorem, we know
\frac{9}{x}=\frac{21}{14}
\rightarrow9*14=21x
\rightarrow 21x=126
\rightarrow x=6
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