Question

Me ajudeeeemmmm -{-[-(1-1/3 -3/4)]}???

Answer 1

$- \left \{ {-[-( 1- \frac{1}{3}- \frac{3 }{4} ) ] } \right\}} =-( \frac{12-4-9}{12} )=- (\frac{-1}{12} )= \frac{1}{12}$