若2x-3y=0,且y≠0,则6x-7y/6x+7y的值为______________
若2x-3y=0,且y≠0,则6x-7y/6x+7y的值为______________
2x-3y=0,且y不等于0则6x-7y/6x+7y的值为
若3(X-Y)=2(X+Y),且X不等于0,则X/Y+Y/X的值为多少大神们帮帮忙
如果分式3x-6y/x+y=0,那么x,y 应满足 A、x=2y B、x≠-y C、x=2y且x≠-y D、x=2y且y
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于
已知4x-3y-6z=0,x+2y-7z=0,且x、y、z都不为0,求(3x+2y+z)/(x+2y+3z)的值 快帮求
已知4x-3y-6z=0 ① ,x+2y-7z=0 ②,且x,y,z均不为0,求3x+2y+z÷x+2y+3z的值
若(x-4y)(x+3y)=0 且xy>0 则分式x+3y/2x-y的值为
设实数x,y满足不等式组{x+2y-5>0 2x+y-7>0 x>=0 y>=0} ,且x,y为整数,则3x+4y的最小
若x,y为实数且满足 x^+3y^-12y+12=0 ,求y^x的值?
若X,Y互为相反数,且(X+Y+3)(X-Y-2)=0,求X,Y的值?
已知4x-3y-6z=0,x+2y-7z=0,且x,y,z≠0,求2x+3y+6z/x+5y+5z的值.