$A = \dfrac{{Tr}}{{\left( {1 + r} \right)\left[ {{{\left( {1 + r} \right)}^N} - 1} \right]}}$

$A = \dfrac{{Tr\left( {1 + r} \right)}}{{\left[ {{{\left( {1 + r} \right)}^N} - 1} \right]}}$

$A = \dfrac{{T\left( {1 + r} \right)}}{{r\left[ {{{\left( {1 + r} \right)}^N} - 1} \right]}}$

$A = \dfrac{{T\left( {1 + r} \right)\left[ {{{\left( {1 + r} \right)}^N} - 1} \right]}}{r}$