x+y=0 30%x+40%y=160×80%x+y=0 30%x+40%y=160×80%
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/09 06:14:12
x+y=0 30%x+40%y=160×80%x+y=0 30%x+40%y=160×80%
x+y=0 30%x+40%y=160×80%
x+y=0
30%x+40%y=160×80%
x+y=0 30%x+40%y=160×80%x+y=0 30%x+40%y=160×80%
y=1280 x=-1280
30%x + 30%y=0 30%x + 30%y+10%y =160*80% 10%y=160*80% y=1280
x=0-y =-1280
(x+y-5)*(x+y-5)+(x-y+3)=0 x*x-y*y
已知:3x-5y=0,求x/y,x-y/y,x-y/x
(1)x+y=420,30%x+40%y=160×80% (2)x-y/7-x+y/6=1/2,2(x-y)-5(x+y)+1=0,求方程组解嗷嗷嗷!
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
x+y=0 30%x+40%y=160×80%x+y=0 30%x+40%y=160×80%
X+Y=40,(X*Y)/(X+Y)=7.5
化简 x / y(x+y) - y / x(x+y) =
y=X(4-3X) ,y'=4-6x ,y'=0 ,x=2/30
x(x+y)(x-y)-y(y+x)(y-x)=(x-y)( )填空
x+x=y+30
x+y=450;40%x+30=60%y
{x+y=450,60%y-40%x=30
x+x+x+x+y=40 x+y= 13x=y=
40X+30Y=2200 X>20 Y
怎么解这方程Y/(X+Y)=40% Y/(X+Y+5)=30%
x+x+y+y+y=21 ,x+x+y+y+y+y+y=27 ,x ,y=?
x+x+y+y+y=21 ,x+x+y+y+y+y+y=27 ,x ,y=?
x>=0,y