Question

Resolva ;
{- 3a/4 - [ 5a - ( a + a/2) ] }

Answer 1

{-3a/4-[5a-(a+a/2)]}=
{-3a/4-[5a-(2a/2+a/2)]}=
{-3a/4-[5a-3a/2]}=
{-3a/4-[10a/2-3a/2]}=
{-3a/4-7a/2}=
-3a/4-14a/4=
-17a/4