若3x=5y,则x:y=________,(x-y):y=______
若3x-4y=0,则x/y=______,(x-y)/y=______,(3x+2y)/(2x+3y)=_____.
若2x-y=2y-x=15,则x-y=________.
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于
已知x/5=y/3,则(x/x+y)+(y/x-y)-(yxy/xxx-yxy)
若|3x-y-7|+(5x+2y-8)2=0,则x-y=______.
C语言:int x=5,y=7,z; z=x>y?5>3?++x+y:x:++x-y++ 则z的值为________.
若3x-5y=0,则x+y/x=(),x-y/y=(),2x-3y/2x+3y=( )
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
若x+3y=3x+2y=7,则x=______,y=______.
若2x+3y-1=y-x-8=x+6,则2x-y=______.
(5x-6y)(x+y)=0(x≠0) 则x分之y=________
若2x-3y=5,则6-4x+6y=______.