5x+3y=52;11x+2y=90,怎么解,
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5x+3y=52;11x+2y=90,怎么解,5x+3y=52;11x+2y=90,怎么解,5x+3y=52;11x+2y=90,怎么解,10x加6y等于104/133x加6y等于270/22式减1式
5x+3y=52;11x+2y=90,怎么解,
5x+3y=52;11x+2y=90,怎么解,
5x+3y=52;11x+2y=90,怎么解,
10x 加6y等于104 /1
33x加6y等于270 /2
2式减1式得到23x等于166
得出x等于166/23。。。
剩下的你自己搞吧,,就是这样写
5x+3y=52;11x+2y=90,怎么解,
4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11
3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
3x(2x+y)-2x(x-y),其中x=1,y=1/5
3(x+y)-2(x-y)=11 4(x+y)+3(x-y)=9
x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2
6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5
(x-y)/(x+y)=3求( 3x-2y-1)/(x+y-5)
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
先化简再求值(x-y)(x-2y)+(x-2y)(x-3y)-2(x-3y)(x-4y) x=4 y=5
3*X=Y X/2=Y/5+11
把6x(x-y)的平方+3(y-x)的立方分解因式我知道答案是6x(x-y)^2+3(y-x)^3=6x(x-y)^2-3(x-y)^3=3(x-y)^2[2x-(x-y)]=3(x-y)^2(x+y)可为什么=6x(x-y)^2-3(x-y)^3=3(x-y)^2[2x-(x-y)]
{(x+y)/2+(x-y)/3=1,(x+y)-5(x-y)=2.求x=?,y=?
初二上学期方程题 4x+y=5 5x+4y=63x-2y=1 2x+3y=13x-2y=7 7x+5y=32x+3y=17 2x-y=-4x+5y=6 2x+y=23x-6y=4 3x+2y=52x+y=73x-4y=53x+y=1x-2y=-1x+y=42x+3y=92x-3y=74x+5y=3x+y=20004x+6y=90003x+5y=113x-2y=42x+3y=215x-2y=5x+y=54x+3y=182x+3y=16x+4y=132x+3y=40x