Question 311055
first find common denominator
which in this case simply multiply the 2 denominators together to get {{{(7-x)(x+7)}}}
{{{(6/(7-x))+(5/(x+7))}}}
{{{((x+7)/(x+7))(6/(7-x))+((7-x)/(7-x))(5/(x+7))}}}
{{{((6x+42)/((x+7)(7-x)))+((35-5x)/((x+7)(7-x)))}}}
{{{((77+x)/((x+7)(7-x)))}}}