Question

qual o valor da expressão?

Answer 1

   {-[-2-(+1/3-1/6+1)-5+0.2-(-1+1/3)]-1}+1/3 
= {-[-2-1/3+1/6-1-5+0.2+1-1/3]-1}+1/3 
= {-[-6.8+3/6]-1}+1/3
= {6.8-3/6-1}+1/3
= {5.8-3/6}+1/3
= 53/10 + 1/3 
= 169/30