Question

Reduce the rational expression to lowest terms.cd — c+d —1/ cd +c+d+1=

Answer 1

we have the expression

`(cd-c+d-1)/(cd+c+d+1)`

Group terms

`((cd+d)+(-c-1))/((cd+d)+(c+1))`
`(d(c+1)-(c+1))/(d(c+1)+(c+1))`

factor (c+1)

`((c+1)(d-1))/((c+1)(d+1))`

Simplify

`((d-1))/((d+1))`