已知1/x-1/y=5,求(2y+3xy-2x)/(-4x+2xy+4y)的值
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/13 01:26:26
![已知1/x-1/y=5,求(2y+3xy-2x)/(-4x+2xy+4y)的值](/uploads/image/z/3722368-40-8.jpg?t=%E5%B7%B2%E7%9F%A51%2Fx-1%2Fy%3D5%2C%E6%B1%82%282y%2B3xy-2x%29%2F%28-4x%2B2xy%2B4y%29%E7%9A%84%E5%80%BC)
x){}K
+t
+mMuml065566|>i"}2tِk.%`I[
#
mc] կ66rv=];H>[tBϳ^\dҊJh]#
S4cM\XẆ@$ف tu
已知1/x-1/y=5,求(2y+3xy-2x)/(-4x+2xy+4y)的值
已知1/x-1/y=5,求(2y+3xy-2x)/(-4x+2xy+4y)的值
已知1/x-1/y=5,求(2y+3xy-2x)/(-4x+2xy+4y)的值
(2y+3xy-2x)/(-4x+2xy+4y)
=(2/x+3-2/x)/(-4/y+2+4/x) 分子分母同时除以xy
=[-2(1/x-1/y)+3]/[4(1/x-1/y)+2]
=(-10+3)/(20+2)
=-7/22
【数学】已知 1/x-1/y=3 求 5x-xy-5y / x-2xy-y=?已知 1/x=1/y 求 2x-3xy-2y / x-2xy-y=?
已知1/x+1/y=5 求2x-3xy+2y/3x+2xy+3y
已知1/x-1/y=5,求分式2x+5xy-2y/3x-xy-3y
已知1/x+1/y=1/2,求代数式3x-5xy+3y/-x+3xy-y
已知1/x-1/y=3,求5x+3xy-5y/x-2xy-y的值
已知1/x-1/y=3,求x-2xy-y/5x+3xy-5y的值
已知1/x-1/y=3,求5x+3xy-5y/x-2xy-y的值.
已知1/x-1/y=3,求5x+3xy-5y/x-2xy-y的值
已知1/X-1/y=3,求(5x+3xy-5y)/(x-2xy-y)的值
已知1/x-1/y=2,求5x+3xy-5y/x-2xy-y
已知1/x-1/y=3,求3x-5xy-3y/x-2xy-y的值.
已知1/x+1/y=3,求(3x-5xy+3y)/(x-2xy+y)
已知1/x-1/y=3,求3x-5xy-3y/x-2xy-y的值.
已知1/x+1/y=3,求3x-2xy+3y/x+5xy+y的值
已知1/x+1/y=5 求2x-3xy+2y/x+2xy+y
已知1/x-1/y=2,求x-y-5xy/2x-2y+3xy
已知1/x+1/y=5,求x+2xy+y/2x-3xy+2y的值如题.
已知:1/X+1/Y=5,求 2x-3xy+2y/x+2xy+y的值,