Which equations illustrate the associative property of addition? Choose exactly two answers that are correct.
A. (11 + 2.2) + (-5) = 11 + [2.2 + (-5) ]
B. - 3 • (5 + 8.5) = - 3 • 5 + (-3) • 8.5
C. + 1.8 = 1.8 +
D. - 7 + [4 + (-2.1 • 6) ] = (-7 + 4) + (-2.1 • 6)
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