{x=2y—3{4y—2x=19问x=? y=?
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{x=2y—3{4y—2x=19问x=?y=?{x=2y—3{4y—2x=19问x=?y=?{x=2y—3{4y—2x=19问x=?y=?无解啊是不是题抄错了?据你给的条件得:1.x=2y-32.x=
{x=2y—3{4y—2x=19问x=? y=?
{x=2y—3{4y—2x=19问x=? y=?
{x=2y—3{4y—2x=19问x=? y=?
无解啊
是不是题抄错了?据你给的条件得:
1. x=2y-3
2. x=2y-9.5
或者印刷错误,要不就是你老师是个笨蛋。
这个,方程式无解!是不是发错了?
次方程存在问题 无解
方程式都冲突,你们老师的脑袋让驴提拉?
x=2y-19/2
{x=2y—3{4y—2x=19问x=? y=?
(x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)=
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
已知x-y=3,x+y=8,问x^2 -y^2=?
3(x+y)—4(x—y)=4 { (x+y)/2+(x—y)/6=1
2(x-y)/3—x+y/4=1 6(x+y)—4(2x-y)=16
X/Y=2/5 X+60/Y=4/7 问X.Y各是多少
3(x+y)—4(x-y)=4,(x+y/2)+(x-y/6)=1.解方程组
2(x+y)-3(x-y)=3 ,4(x+y)+3(x-y)=15
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2
(x+y)/2- x-y/2=6 3(x+y)=4(x-y)
x+y/3+x-y/2=6 4(x+y)-2(x-y)=40
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20
{(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20
4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6
3(x+y)-2(x-y)=11 4(x+y)+3(x-y)=9
4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11