已知1/x-1/y=2,求3x+5xy-3y/x-xy-y
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/06 12:47:35
已知1/x-1/y=2,求3x+5xy-3y/x-xy-y
已知1/x-1/y=2,求3x+5xy-3y/x-xy-y
已知1/x-1/y=2,求3x+5xy-3y/x-xy-y
将1/x-1/y=2通分可得:y-x=2xy,那么x-y=-2xy
分子3x+5xy-3y=3*(x-y)+5xy=3*(-2xy)+5xy=-xy
分母x-xy-y=(x-y)-xy=-2xy-xy=-3xy
所以3x+5xy-3y/x-xy-y=-xy/-3xy=1/3
【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,