(3x-5y)-(3x-2y)等于几
(3x-5y)-(3x-2y)等于几
x+3=5-y,那么x+y等于几
2x等于5y,2z等于3y求3x等于几z
2x-5y=7 2x+3y=1 求x,y等于几
2X+8Y=17,3X+5Y=7,X和Y,等于几?
X加Y等于8,2X加3Y等于.4X加3Y等于几?
(3x+2y-5)²与丨5x+3y-8丨互为相反数,x等于几 y等于几
求下列函数的反函数 y=2x-1等于几 y=1减x分之3等于几 y=5x-2分
3x+2y=4y+3z=5z+5x,请问x:y:z等于几比几比几?
x/4+2等于x,x=多少.y/5等于y-3,Y=多少
若X等于3Y减2,Y等于2x减3,则X等于几
(5x-3y)-(3x-5y)的平方等于几