Topic 13: Properties for use after Bits and Pieces III Investigation 4When you are simplifying a numerical expression, you may be asked tojustify or explain your steps.
A.
The steps below show one way to simplify ?(3 ?8) + 7 - 8.
?(8 ?3) + 7 - 12
?(3 ?8) + 7 - 12 ?3 ?8 + 7 - 121 ?8 + 7 - 128 + 7 - 1215 - 123Copy and complete the steps above, naming a property or operation tothe right of each step.
... 
