Which of the following demonstrates using the
associative property of addition to simplify? Select all
that apply.
A) (-13.36 +2.17) + 7.83 = -13.36 + 10
B) 9+ (1.4 + 14.3) + 15.7 = 9+ 1.4+ 30
C) 21.36 + 15.32 - 1.36 = 20+ 15.32
D) [12.3+(-24.6)] - 15.4 = 12.3 + (-40)
E) 10.14 - 10.14 + 28.93 = 28.93