已知a/b=c/d=e/f=2,且b+d+f≠0 (1)求a+c+e/b+d+f的值; (2)若a-2c+3e=5,求b-2d+3f的值.

问题描述:

已知

a
b
c
d
e
f
=2,且b+d+f≠0
(1)求
a+c+e
b+d+f
的值;
(2)若a-2c+3e=5,求b-2d+3f的值.

(1)∵

a
b
=
c
d
=
e
f
=2,
a+c+e
b+d+f
=2;
(2)∵
a
b
=
c
d
=
e
f
=2,
∴a=2b,c=2d,e=2f,
∵a-2c+3e=5,
∴2b-2(2d)+3(2f)=5,
∴b-2d+3f=2.5.