若10x=3,10y=4,则102x-y=
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若x-y不等于0,2x-3y=0,则分式(10x-11y)/(x-y)的值是()?(10x-11y)/(x-y) =[(8x-8y)+(2x-3y)]/(x-y) =8为什么8X-8Y=8?(10x-11y)/(x-y)=[(8x-8y)+(2x-3y)]/(x-y)=8+(2x-3y)]/(x-y)=8+0=8
若x/2=y/3,且x+y=10,则x=?y=?
若x-y=2,x²-y²=10,则3x+y等于
若x-y=2,x²-y²=10,则3x-y=
若x和y互为相反数,则3x-10+3y+y/5x=
若(x-y)(x-3-y)=10,则x-y的值是?
若10x=3,10y=4,则102x-y=
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian
若x^2-4x+y^2-10y+29=0,求x^2y^2+2x^3y^2+x^4y^2的值
比例线段若x+y/x-y=4/3,则x/y=x+y/x-y=4/3,则x/y=要快~~
3x+x+4y+(90+10)x=3y-(2x+y)+510y=34x
若x+y=4,则多项式1/2(x+y)+4(x-y)-3(x-y)-3/2(x+y)-x+y值是()
若3x+7y+z=5,4x+10y+z=3,则x+y+z=?
若【2x²-3y²-10y+5】²+根号x-2y,则x= y=
{4x-3y-10=0 3x-2y=0,{3x-4(x-y)=2 2x-3y=1,{2(x+y)-(x-y)=3 (x+y)-2(x-y)=1
(x+y)(x+y-10)+25=0,且x-y=3,求x,y
(x+y)(x+y-10)+25=0,且x-y=3,求x,y
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于