in triangle ABC, if c+a/12=a+b/14=b+c/18 then
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Answer:
c + a 18 =
a + b
14
18 11 = b + c =
18
2s a = 11 S
7 11 介 a = S- S
= 11A 11 7
S - a 7s
a + c = 12s 11
2s -b= 12s 11
A S - b 11A S Tr 11r
7r1 r2 11r - 11r = 0 11
11r
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