Question

如果y=x/x-1,那么用y的代数式表示x为？

Answer 1

y(x-1)=x. xy-y=x. x-xy=y. x(1-y)=y. x=y/1-y(y不等于1) 后面括号的y不等于1一定要加上！！谢谢

Answer 2

y(x-1)=x. xy-y=x. x-xy=y. x(1-y)=y. x=y/1-y(y不等于1)

Answer 3

y=x/(x-1)y(x-1)=xyx-y=xyx-x=yx(y-1)=yx=y/(y-1)谢谢采纳！

Answer 4

X=y/y-1

Answer 5

y(x-1)-x=0，yx-y-x=0，
x(y-1)-y=0，x=y/y-1