Question 486416
{{{3/(10x+10)=3/(10(x+1))}}}
{{{x/(5x^2-5)=x/(5(x^2-1))=x/(5(x-1)(x+1))}}}
The lowest common denominator is {{{10(x-1)(x+1)=10(x^2-1)=10x^2-10}}}