若x/2=y/3,且x+y=10,则x=?y=?
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于
若X,Y互为相反数,且(X+Y+3)(X-Y-2)=0,求X,Y的值?
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
2x+y=3且x-3y=5,则y(x-3y)^2+2x(3y-x)^2=?
2x+y=3且x-3y=5,则y(x-3y)^2+2x(3y-x)=?
若X>1,Y>0,且满足XY=X的Y次方,X/Y=X的3Y次方,则X+Y等于?
若x,y为实数,且根号x+y+3+x-y-2绝对值=0,则xy=
x>1,y>0,且满足xy=x^y,x/y=x^3y,求x+y
若(3x+2y-10)^0无意义,且2x+y=5,求x、y的值.
若(2x+y-5)º无意义,且3x+2y=10,求x,y的值
实数x,y满足tanx=x,tany=y,且|x|≠|y|,则sin(x+y)x+y−sin(x−y)x−y