X+Y=56旦X/y=7/8X=()Y=()甲数的2/3与乙数的2/5相等且甲数比乙数小1.6则甲数是()乙数是()
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![X+Y=56旦X/y=7/8X=()Y=()甲数的2/3与乙数的2/5相等且甲数比乙数小1.6则甲数是()乙数是()](/uploads/image/z/465770-2-0.jpg?t=X%2BY%3D56%E6%97%A6X%2Fy%3D7%2F8X%3D%EF%BC%88%EF%BC%89Y%3D%EF%BC%88%EF%BC%89%E7%94%B2%E6%95%B0%E7%9A%842%2F3%E4%B8%8E%E4%B9%99%E6%95%B0%E7%9A%842%2F5%E7%9B%B8%E7%AD%89%E4%B8%94%E7%94%B2%E6%95%B0%E6%AF%94%E4%B9%99%E6%95%B0%E5%B0%8F1.6%E5%88%99%E7%94%B2%E6%95%B0%E6%98%AF%EF%BC%88%EF%BC%89%E4%B9%99%E6%95%B0%E6%98%AF%EF%BC%88%EF%BC%89)
X+Y=56旦X/y=7/8X=()Y=()甲数的2/3与乙数的2/5相等且甲数比乙数小1.6则甲数是()乙数是()
X+Y=56旦X/y=7/8X=()Y=()
甲数的2/3与乙数的2/5相等且甲数比乙数小1.6则甲数是()乙数是()
X+Y=56旦X/y=7/8X=()Y=()甲数的2/3与乙数的2/5相等且甲数比乙数小1.6则甲数是()乙数是()
392/15 448/15
2.4 4
x=292/15 y=448/15
甲2.4 乙4 X=392/15 Y=448/15
X+Y=56旦X/y=7/8X=(392/15)Y=(448/15)
甲数的2/3与乙数的2/5相等且甲数比乙数小1.6则甲数是(2.4)乙数是(4)
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
x+x+x+x+y+y+y=56
化简 x / y(x+y) - y / x(x+y) =
x(x+y)(x-y)-y(y+x)(y-x)=(x-y)( )填空
x+y+|x-y|=-56 求x*y 最小值
X+X+Y+Y+Y=56,X+X+X+Y+Y=54.X=?Y=?XY=?
已知X+X+X+Y+Y=54,X+X+Y+Y+Y=56,那么X=( ),Y=( )
根据x+x+x+y+y=54,x+x+y+y+y=56,求出x.y的值
x+x+y+y+y=21 ,x+x+y+y+y+y+y=27 ,x ,y=?
x+x+y+y+y=21 ,x+x+y+y+y+y+y=27 ,x ,y=?
y=x(x
7x:4y,x:y=( ):(
X+X+X+Y+Y=54 X=( ) Y+Y+Y+X+X=56 X=( )
x+x+x+y+y=54 x+x+y+y+y=56 求y的值
y(x+y)+(x-y)²-(x+y)(x-y),其中x=-1/3,y=3
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
5(x-y)³-3(x-y)²+7(x-y)-5(x-y)³+(x-y)²-5(x-y),其中,x-y=1/3.5(x-y)³-3(x-y)²+7(x-y)-5(x-y)³+(x-y)²-5(x-y),其中,x-y=1/3先化简,再求值;
x-y/13=y/7 x+y/y已知(x-y)/13=y/7则(X+Y)/Y=?