Question

помогите решить легкую задачку
(3m+1/3m-1-3m-1/3m+1): 4m/9m+3

Answer 1

$frac{3m+1}{3m-1}- frac{3m-1}{3m+1} = frac{(3m+1) ^{2}-(3m-1) ^{2} }{(3m-1)(3m+1)}= frac{12m}{(3m-1)(3m+1)} , \ frac{12m}{(3m-1)(3m+1)} cdot frac{3(3m+1)}{4m}= frac{9}{3m-1}$