Question

(3-7/4)*(1/3+7/15)/2*(2/5-2/7)

Answer 1

3-7/4 = 5/4. 1/3+7/15= mínimo =15 (5+7) =12/15. 2/5-2/7=mínimo =35 (14-10) = 4/35. (5/4)*(12/15)/2*(4/35). (12/15) /2 = 12/15*1/2=6/15 (5/4)*(6/15)*(4/35)=2/35

Answer 2

$(3- \frac{7}{4})* \frac{( \frac{1}{3}+ \frac{7}{15})}{2}*( \frac{2}{5}- \frac{2}{7}) = \\ \\ ( \frac{12}{4}- \frac{7}{4})* \frac{( \frac{5}{15}+ \frac{7}{15})}{2}*( \frac{14}{35}- \frac{10}{35}) = \\ \\ ( \frac{12-7}{4})* \frac{( \frac{5+7}{15})}{2}*( \frac{14-10}{35}) = \\ \\ ( \frac{5}{4})* \frac{( \frac{12}{15})}{2}*( \frac{4}{35}) = \\ \\ ( \frac{5}{4})* \frac{ 12}{30}*( \frac{4}{35}) = \\ \\ ( \frac{5}{4})* \frac{ 2}{5}*( \frac{4}{35}) = \boxed{ \frac{2}{35}}$

Espero que te sirva, salu2!!!!