Question

1+(1/x) / 1-(1/x) = ?/?

Answer 1

multiply top and bottom by x

Answer 2

\[\frac{1+\frac{1}{x}}{1-\frac{1}{x}}\times \frac{x}{x}\]

Answer 3

gives
\[\frac{x+1}{x-1}\] just like that

Answer 4

k?