Question 420949
{{{ 1/x + 1/(x+1) }}}
Multiply the 1st term by {{{(x+1)/(x+1)}}}
and the 2nd term by {{{x/x}}}
{{{(x + 1)/(x^2 + x) + x/(x^2 + x) }}}
{{{ (x + x + 1)/(x^2 + x) }}}
{{{ (2x + 1)/(x^2 + x) }}}