Question

como resolver 2-[3/5-(-1/2+1/4)]

Answer 1

$2 - \{\frac{3}{5} - (-\frac{1}{2} + \frac{1}{4})\} \\ \\ 2-\{\frac{3}{5} - (\frac{-2 + 1}{4})\} \\ \\ 2 - \{\frac{\frac{12}{5}}{4} +\frac{1}{4}\} \\ \\ 2 - \dfrac{\frac{12}{5} + \frac{5}{5}}{4} \\ \\ 2 - \dfrac{\frac{17}{5}}{4} \\ \\ 2 - \frac{17}{20} \\ \\ \dfrac{40}{20} - \dfrac{17}{20} = \dfrac{40 - 17}{20} = \boxed{\frac{23}{20}}$