y=(50-x-180/10)(x
y=(50-x-180/10)(x
y=(180+x-20)(50-x/10)
解方程组6分之X+y+10分之X-y=36分之X+y-10分之X-y=-1
若x²+y²﹣4x﹣10y+29=0求分式x/10y-y/10x的值
2x-10=15x+30,6x-6=6x+2,9-3x=2x-8,5x=9x-50 ,5y-5=12-6y,15x-9=
y=x/5-(15x+50)/x² 求函数零点!
5\(x-2y)=10x-y=1 解二元一次方程
已知x和y满足x+3y+|3x-y|=19,2x+y=6,求x,y的值
x(x-y)-y(y-x)+(x-y)²因式分解
① X/45=Y+0.5 ② X/50=Y-0.5
① X/35=Y+0.6 ② X/50=Y-4/3
2.5(X+Y)=1200 10/3(X-Y)=1200