若(2a-c)^2+1/3|4b-5c|=0,则a:b:c=
若a:b:c=4:5:6则2a+3b-c/2a-3b+c=
(1)设实数a、b、c满足|a-2b|+√(3b-c)+(3a-2c)^2=0,则a:b:c=________.
若c不等于0,3a=5b+2c,3/2a+1/2b=4c.求a:b:c.
若a-b=2,a-c=1/2,则(b-c)×3-(b-c)+9/4=
已知a+b/a-b=b+c/2(b-c)=c+a/3(c-a),求证:8a+9b+5c=0
若3a+4b-c的绝对值+(c-2b)²=0,则a:b:c=
若a/5=b/3=c/4≠0,则(a+b+c)/b=_____,(a+2b+3c)/(3a+b+2c)=_______
已知实数a b c 满足1/2| a-b|+√2b+c +c二次方=c -1/4,则a(b+c)=?
若a/b+c=b/c+a=a+c/a+b+2c,则a:b=
|3a+4a-c|+1÷4(c-2b)的平方=0,则a:b:c=
a<c<0小于b “//”绝对值 (1)化简:/a-b/+/a+c/-/b-c/+/2c/; (2)当a=-3,c=-2
) 一.{0=a-b=c 0=9a+3b+c -5=a+b+c 二.{2=a+b+c 0=9+3b+c 20=4a-2b