若c不等于0,3a=5b+2c,3/2a+1/2b=4c.求a:b:c.
问题描述:
若c不等于0,3a=5b+2c,3/2a+1/2b=4c.求a:b:c.
答
3/2a+1/2b=4c
即 3a+b=8c
即8c-b=3a
2c+5b=3a
解得7c=7b=3a
∴a:b:c=7:3:3