已知a-3c=0,b/c=2,abc≠0,求(a+2b+3c)/(3a+2b+c).

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已知a-3c=0,b/c=2,abc≠0,求(a+2b+3c)/(3a+2b+c).已知a-3c=0,b/c=2,abc≠0,求(a+2b+3c)/(3a+2b+c).已知a-3c=0,b/c=2,a

已知a-3c=0,b/c=2,abc≠0,求(a+2b+3c)/(3a+2b+c).
已知a-3c=0,b/c=2,abc≠0,求(a+2b+3c)/(3a+2b+c).

已知a-3c=0,b/c=2,abc≠0,求(a+2b+3c)/(3a+2b+c).
a-3c=0,b/c=2
a=3c
b=2c
(a+2b+3c)/(3a+2b+c)
=(3+2*2+3)/(3*3+2*2+1)
=10/14
=5/7

a=3c b=2c
所以:(a+2b+3c)/(3a+2b+c)
=(3c+4c+3c)/(9c+4c+c)
=10c/14c
=5/7