1/x-1/y=3,求2x+3xy-2y/x-y

来源：学生作业帮助网编辑：六六作业网时间：2024/12/28 16:31:56

1/x-1/y=3,求2x+3xy-2y/x-y1/x-1/y=3,求2x+3xy-2y/x-y1/x-1/y=3,求2x+3xy-2y/x-y∵1/x-1/y=3∴y-x=3xy2x+3xy-2y/

1/x-1/y=3,求2x+3xy-2y/x-y
1/x-1/y=3,求2x+3xy-2y/x-y

1/x-1/y=3,求2x+3xy-2y/x-y
∵1/x-1/y=3
∴y-x=3xy
2x+3xy-2y/x-y
=2(x-y)+3xy/x-y
=-6xy+3xy/-3xy
=1