Question

questões básicas me ajudem??

Answer 1

Muitas "questões básicas" numa tarefa só
Vou ajudar com 2

              $[3-2[12- \frac{1}{3} ( \frac{4}{3} - \frac{1}{2} )-2]+10] \\ \\ =[3-2[12- \frac{1}{3} ( \frac{5}{6})-2]+10 \\ \\ =[3-2[12- \frac{5}{18} -2]+10] \\ \\ =[3-2[ \frac{175}{18}]+10] \\ \\ =[13- \frac{175}{9} ] \\ \\ =- \frac{58}{9}$
 
   
               $\frac{ \frac{4}{7}( \frac{12}{5} - \frac{9}{3}) }{18( \frac{1}{4}- \frac{4}{9}) } \\ \\ = \frac{ \frac{4}{7}(- \frac{3}{5}) }{18(- \frac{7}{36}) } \\ \\ = \frac{- \frac{12}{35} }{- \frac{7}{2} } \\ \\ = \frac{24}{245}$