9y+y=等于几

9y+y=等于几 x、y等于几 X+Y=90,X/Y=5,请问X等于几?Y等于几? x-20=y+20等于几? 已知x加x加y等于十五,x加y等于9,x等于几?y等于几? x+3=5-y,那么x+y等于几 若|3y-2|=0,y等于几 x等于几Y等于几 x等于y+y+y,x+y=48,求x是几?y是几?急 X加Y=320 X等于Y加Y加Y X和Y各等于几 10y+2=22y-5-3y,Y等于几,解一元一次方程 x-3=0 2x-5y=9 X,Y 等于几? 已知9X-3Y-3=0,那么3X-Y等于几 请问7y+2y等于几 (-x+y)(x-y)等于几 请问7y+2y等于几 8y减y等于几 若3X=4Y,那么X;Y等于等于几比几