How do you simplify $(x-1)/(x^2-1) +2/(5x+5)$ ?

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Answer 1 · 2016-07-31T10:08:22

$(x-1)/(x^2-1)+2/(5x+5)=7/(5x+5)$

$(x-1)/(x^2-1)+2/(5x+5)$

= $(x-1)/((x-1)(x+1))+2/(5(x+1))$

= $(1cancel((x-1)))/(cancel((x-1))(x+1))+2/(5(x+1))$

= $1/((x+1))+2/(5(x+1))$

= $(5xx1)/(5(x+1))+2/(5(x+1))$

= $5/(5(x+1))+2/(5(x+1))$

= $7/(5(x+1))$

= $7/(5x+5)$

How do you simplify (x-1)/(x^2-1) +2/(5x+5)(x-1)/(x^2-1) +2/(5x+5)?