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若x/y=3/4,y-x/y+x=?,2x+3y/2x-y=?,x+y/6x-3y=?
题目详情
若x/y=3/4,y-x/y+x=?,2x+3y/2x-y=?,x+y/6x-3y=?
▼优质解答
答案和解析
x/y=3/4
x=3/4y
(y-x)/(y+x)
=(y-3/4y)/(y+3/4y)
=1/4÷7/4
=1/7
2x+3y/2x-y
=（2*3/4y+3y）/(2*3/4y-y)
=9/2÷1/2
=9
（x+y）/(6x-3y)
=(3/4y+y)/(6*4/3y-3y)
=7/4÷5
=7/20
如果本题有什么不明白可以追问,
x=3/4y
(y-x)/(y+x)
=(y-3/4y)/(y+3/4y)
=1/4÷7/4
=1/7
2x+3y/2x-y
=（2*3/4y+3y）/(2*3/4y-y)
=9/2÷1/2
=9
（x+y）/(6x-3y)
=(3/4y+y)/(6*4/3y-3y)
=7/4÷5
=7/20
如果本题有什么不明白可以追问,
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