which shows the best use of the associative and communitive properties to make simplifying 3/4 - 5 + 9 - 2/4 + 2 easier?
a.) [2 + 3/4 + (-5)] + [(2/4) + 9]
b.) [3/4 + 9 + (-5) + [2 + (-2/4)]
c.) [3/4 + (-2/4)] + [9 + 2 + (-5)]
d.) [3/4 + (-5)] + [9 + (-2/4) + 2]

Please post a real answer.