Question 874700
Dividing by a fraction is the same as multiplying by its reciprocal. 


{{{(((b+7)(b-3))/(7b^2(b+5)))/((b-3)/(7b^2))=(((b+7)(b-3))/(7b^2(b+5)))*(7b^2/(b-3))}}}
{{{(((b+7)(b-3))/(7b^2(b+5)))/((b-3)/(7b^2))=(b+7)/(b+5)}}}