For this problem we have the following expression given:
[tex]\left\lbrack (12-5)-12\right\rbrack =6[/tex]We assume that the question is verify if the equation is correct so first we solve the numbers in the parenthesis:
[tex]\left\lbrack 7-12\rbrack=-5\right?[/tex]And then the final answer for this case would be -5 and not 6 so then the statement for this case is False.