x+y=16 5x-6y=33
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x+y=165x-6y=33x+y=165x-6y=33x+y=165x-6y=33x+y=166x+6y=966x+6y+5x-6y=96+3311x=129x=129/11y=16-129/11y
x+y=16 5x-6y=33
x+y=16 5x-6y=33
x+y=16 5x-6y=33
x+y=16
6x+6y=96
6x+6y+5x-6y=96+33
11x=129
x=129/11
y=16-129/11
y=47/11
x+y=16 5x-6y=33
(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=
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
已知2/y-5/x=16,5/y+6/x=13,求x、y.
3x+4y=16 5x-6y=33用加减法消去x
(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
6x-2y+[5x-2(y-2x)+y],其中x=-2分之16x-2y+[5x-2(y-2x)+y]y=-6分之1 急 在线等x=-2分之1
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
(6x-12)/x=(6y+12)/(y+5) (6x+16)/(x+5)=(6y-16)/y x=?y=?
解方程组3x+4y=16 5x-6y=333x+4y=165x-6y=33
x+y=5; x^y+y^x=17
方程组 共四题 3x-4y=10 x+2y+2=0 5x+6y=42 7x-4y=-41 3x+4y=16 3x+5y=5 5x-6y=33 3x-4y=23(1)3x-4y=10 (2) x+2y+2=05x+6y=42 7x-4y=-41(3)3x+4y=16 3x+5y=55x-6y=33 (4) 3x-4y=23
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)