Question

будь ласка 33 завдання

Answer 1

$( frac{5m}{m+3} - frac{14m}{(m+3)^2} ) : frac{5m+1}{m^2-9} + frac{3(m-3)}{m+3} = \ \ = frac{5m(m+3)-14m}{(m+3)^2} * frac{m^2-9}{5m+1} +frac{3(m-3)}{m+3} = \ \ = frac{5m^2+15m-14m}{(m+3)^2} * frac{(m-3)(m+3)}{5m+1} +frac{3(m-3)}{m+3} = \ \ =frac{m(5m+1)}{(m+3)^2} * frac{(m-3)(m+3)}{5m+1} +frac{3(m-3)}{m+3} = \ \ = frac{m(m-3)}{m+3} +frac{3(m-3)}{m+3} = frac{m(m-3)+3(m-3)}{m+3} = \ \ = frac{(m-3)(m+3)}{m+3} = frac{m-3}{1} = m-3$

Ответ: 1) m-3