1.已知3/x=4/y,求分式x^2+2xy/3x^2-y^2的值.2.已知1/x-1/y=3,求分式3x+2xy-3y
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1.已知3/x=4/y,求分式x^2+2xy/3x^2-y^2的值.2.已知1/x-1/y=3,求分式3x+2xy-3y/x+xy-y的值.3.……
(1)已知3/x=4/y,求分式x^2+2xy/3x^2-y^2的值.
(2)已知1/x-1/y=3,求分式3x+2xy-3y/x+xy-y的值.
(3)已知a/2=b/3=c/4,求分式3a-2b+5c/a+b+c的值.
(1)已知3/x=4/y,求分式x^2+2xy/3x^2-y^2的值.
(2)已知1/x-1/y=3,求分式3x+2xy-3y/x+xy-y的值.
(3)已知a/2=b/3=c/4,求分式3a-2b+5c/a+b+c的值.
再问: 化简:
(1)【(a+2/a^2-2a)+(8/4-a^2)】除以a-2/a
(2)x-3/x^2-1+1/1-x
(3)【a-(2a-1/a)除以1-a^2/a^2+a】
再答: 嗯嗯~~等我一会
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