6X-Y=18 = Y-4X=22,X等于几,Y等于几
6X-Y=18 = Y-4X=22,X等于几,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+3=5-y,那么x+y等于几
x+x+x=15,x+y+y=19,求y-x等于几
x(y-1)-y(x-1)=4求x平方加y平方等于几?
X加Y=320 X等于Y加Y加Y X和Y各等于几
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)
y²+3x=7,y³+x=3,求y等于几.
已知X+Y=12 Y+Z=10 求X Y Z各等于几
x方+y方-2x-4y+5=0 求(x-y)的1999次方等于几?