y-x=45 8y.0.85-8x=(y-35).12-12x到底怎么解啊?
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y-x=458y.0.85-8x=(y-35).12-12x到底怎么解啊?y-x=458y.0.85-8x=(y-35).12-12x到底怎么解啊?y-x=458y.0.85-8x=(y-35).12
y-x=45 8y.0.85-8x=(y-35).12-12x到底怎么解啊?
y-x=45 8y.0.85-8x=(y-35).12-12x到底怎么解啊?
y-x=45 8y.0.85-8x=(y-35).12-12x到底怎么解啊?
y=x+45代入二等式算出x=155 y=200
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
(x+y)/y=8/3则x/y=__ y/x-y=___
(x+y)/y=8/3则x/y=__ y/x-y=___
Y-X=45 (85%Y-X)×8=(Y-35-X)×12 Y-X=45 (85%Y-X)×8=(Y-35-X)×12
12y(x-y)^2-8(x-y)^3=?
y+y+x=10,x+y+x=8,y=?,x=?
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
已知x-y=8,（x+y)(x-y)=32,求x,y的值
X+Y-8X+10Y+41=O,求X/Y-Y/X的值
（x+2y)(x-2y)-(2y-x)(-2x-y)其中x=8,y=-8
已知X*X+Y*Y+6X-8Y+25=0 求（Y/X)+(X/Y)-2=?
[(x+2y)(x-2y)-(x-2y)^2+8y(x+y)]除以4x=
x*x+2x-y*y+6y-8=0,x+y不等于2,求x-y的值
化简 x / y(x+y) - y / x(x+y) =
x-y=8 45/x=36/y x=?y=?
Y-X=45 (80%Y-X)×8=(Y-35-X)×12
(x-8y)(x+y)
已知x+y/y=11/8,求x-y/x+2y的值.