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
=2,且b+d+f≠0e f
(1)求
的值;a+c+e b+d+f
(2)若a-2c+3e=5,求b-2d+3f的值.
答
(1)∵
=a b
=c d
=2,e f
∴
=2;a+c+e b+d+f
(2)∵
=a b
=c d
=2,e f
∴a=2b,c=2d,e=2f,
∵a-2c+3e=5,
∴2b-2(2d)+3(2f)=5,
∴b-2d+3f=2.5.