Question

preciso calcular o valor da expressão abaixo

Answer 1

$1+[\frac{15}{4}-[ \frac{6}{8}:( \frac{1}{2}+ \frac{3}{4})]}] \\ \\ 1+[\frac{15}{4}-[ \frac{6}{8}:( \frac{5}{4})]}] \\ \\ 1+[\frac{15}{4}-[ \frac{6}{8}.( \frac{4}{5})]}] \\ \\ 1+[\frac{15}{4}- \frac{3}{5}] \\ \\ 1+[ \frac{75}{20} - \frac{12}{20} ] \\ \\ 1+ \frac{63}{20} \\ \\ \frac{20}{20}+ \frac{63}{20} = \frac{83}{20}$