x+y=22,5x+6y=22,x=?,y=?
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/08 14:17:59
x+y=22,5x+6y=22,x=?,y=?x+y=22,5x+6y=22,x=?,y=?x+y=22,5x+6y=22,x=?,y=?x+y=22…………①5x+6y=22…………②①×6-②得x
x+y=22,5x+6y=22,x=?,y=?
x+y=22,5x+6y=22,x=?,y=?
x+y=22,5x+6y=22,x=?,y=?
x+y=22…………①
5x+6y=22…………②
①×6-②得
x=110
把x=110代入①得
110+y=22
y=22-110
y=-88
∴x=110,y=-88
请点击下面的【选为满意回答】按钮,
原式1=5x+5y=110
原式2-原式1=5x+6y-5x-5y=22-110
解得y=-88
所以x=110
x=110,y=-88
x+y=22①
5x+6y=22②
由①得5x+5y=110③
②-③得y=-88
将y=-88代入①
得x=110
∴x=110,y=-88
x+y=22,5x+6y=22,x=?,y=?
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
(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
(x+y)/6+(x-y)/10=1,(x+y)/6-(x-y)/10=5
{6(x-y)-7(x+y)=21 {2(x-y)-5(x+y)=-1
x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2
6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5
(5x-6y)(x+y)=0(x不等于y),则y/x=
化简 x / y(x+y) - y / x(x+y) =
x(x+y)(x-y)-y(y+x)(y-x)=(x-y)( )填空
1.5(x+y)+3(x-y)=27(x+y)-3(x-y)=-62.x-y/7 - x+y/10 =1/22(x-y)-5(x+y)=3所谓细节决定成败,
x+y=5; x^y+y^x=17
y=x(x
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
若(X×X+Y×Y)(X×X+Y×Y-5)=36,则X×X+Y×Y=
{x+y+z=12 x+2y+5z=22 x=4y
{5x-2y=7y+2x 3x+2y=22