Respuesta :
[(3+3)+3]-3+3
This is correct because the whats in the bars goes first so you do the parenthesis then the plus 3 then you do the outside which is 3 plus 3 which is equal to 6 so then you subtract 9-6.
This is correct because the whats in the bars goes first so you do the parenthesis then the plus 3 then you do the outside which is 3 plus 3 which is equal to 6 so then you subtract 9-6.