6[5(-6)-1]+2/7(6)+4 = 6[(-30)-1]+2/42+4
=======> 6(-31)+2/42+4
==========> -186+2/46
=============> -184/46
================> -4
HOPE THIS HELPED THE KEY IS TO ALWAYS FOLLOW THE ORDER :
BRACKETS
MULTIPLICATION or DIVISION
ADDITION or SUBSTRACTION
THE MOST IMPORTANT THING IS FOR YOU TO UNDERSTAND.
