y/x=10.X等于3.7..那Y等于几.
x+3=5-y,那么x+y等于几
xy+x-y=18,x,y各等于几
y*y*y*y+2x*x*x*x=4x*x*y 求x等于几,y等于几,写出所有选项!
x+x+x=15,x+y+y=19,求y-x等于几
X加Y=320 X等于Y加Y加Y X和Y各等于几
y=x-1的平方根,加上x+1的平方根+2,那y的x方等于几?
:x除以2y等于100x x等于几?
6X-Y=18 = Y-4X=22,X等于几,Y等于几
x(y-1)-y(x-1)=4求x平方加y平方等于几?
X与Y是无理数,X+Y=2,X,Y各等于几?
X=y 求x等于几(阿拉伯数字)
已知x减y等于负二;x加y等于1,问x等于几,y等于几.