已知x,y满足1/2|x-2y|+|Y-1/2|=0,求7x-3y的值
已知:x,y满足|2x-y|+|y-1/2|=0,求7x-3y的值.
已知有理数x,y满足1/2|x-y|+|y-1/2|=0 求3x+7y
已知实数x,y满足(x+y)^2=1,(x-y)^2=25,求x,y的值
已知x,y满足y^4+2x^4+1=4x^2y,求x,y的值
若x、y满足2x+y=6,x-3y=1,求7y(x-3y)²-2(3y-x)³的值
已知实数x y满足x×x+y×y-xy+2x-y+1=0 试求x y的值
已知X,Y满足3|2X-Y|+(Y-1/3)的平方=0,求3X-7Y的值
已知:x,y满足1/2|x-2y|+|y-1/2=0去,求7x-3y的值.
已知有理数想x,y满足1/2|x-y|+|y-1/2|=0,求3x-7y-(-2)的值
已知:x,y满足1/2|x-2y|+|y-1/2|=0,求7x-3y的值.
已知有理数X,Y满足1/2│X-Y│+┃Y-1/2┃=0,求3X-7Y的值.
已知x、y满足二分之一,|x-y|+|1-y|=0,求7x-3y的值