Question 366066
Use the common denominator, {{{(x-7)^2}}}
{{{7/(y-7) +13/(y-7)^2=(7(x-7))/(x-7)^2+13/(y-7)^2}}}
{{{7/(y-7) +13/(y-7)^2=(7(x-7)+13)/(y-7)^2}}}
{{{7/(y-7) +13/(y-7)^2=(7x-49+13)/(y-7)^2}}}
{{{7/(y-7) +13/(y-7)^2=highlight((7x-36)/(y-7)^2)}}}