若1/X-1/Y=3,求5X+2XY-5Y/X-4XY-Y

来源：学生作业帮助网 编辑：作业帮 时间：2024/04/29 00:04:48
若1/X-1/Y=3,求5X+2XY-5Y/X-4XY-Y
x=N1BNb=94vQDA9]f7 U؛EJn|Gq.rAAn:7wtAB_ּ֋A`df܇f7҇ޕp[4OMl*dݾ#|`)g2:x,?B~~\}y}[tNqfd\#mv,H`v6:a3 Pu:ሢ

若1/X-1/Y=3,求5X+2XY-5Y/X-4XY-Y
若1/X-1/Y=3,求5X+2XY-5Y/X-4XY-Y

若1/X-1/Y=3,求5X+2XY-5Y/X-4XY-Y
因为1/x-1/y=3
两边乘以xy得y-x=3xy, x-y=-3xy
所以原式=[5(x-y)+2xy]/(x-y-4xy)
=(-5*3xy+2xy)/(-3xy-4xy)
=(-13xy)/(-7xy)
=13/7

1/X-1/Y=3
通分（Y-X）/XY=3
所以Y-X=3XY
5X+2XY-5Y/X-4XY-Y
=5X-5Y+2XY/X-Y-4XY
=5（X-Y）+2XY/(X-Y)-4XY
=[5*(-3XY)+2XY]/-3XY-4XY
=(-15XY+2XY)/-7XY
=-13XY/-7XY
=-13/-7
=13/7

若1/X-1/Y=3,求5X+2XY-5Y/X-4XY-Y 若1/x-1/y=3,求5x+2xy-5y/x-4xy-y的值 若（x+1)^2+|y-2|=0,求3x^2-[5xy-(x^2y-3xy)+4x^2y-8xy]的值 若1/x-1/y=2,求3x-2xy-3y/x-xy-y的值3x-2xy-3y/x-xy-y 不好意思，是3x-2xy-3y/x-2xy-y 【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=? 若x-y=4,xy=1,则(2x+y-2xy)-(3x+2y+xy)-(4xy+3y-5x)= 已知1/x-1/y=5,求分式2x+5xy-2y/3x-xy-3y 若1/x+1/y=5,求3x+4xy+3y/x+3xy+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x-2xy-y/5x+3xy-5y的值 1/X-1/Y=3,求5x+3xy-5y/x-2xy-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=5 求2x-3xy+2y/3x+2xy+3y 已知1/x+1/y=1/2,求代数式3x-5xy+3y/-x+3xy-y 1/x+1/y=2,求2x-xy+2y/3x+5xy+3y的值