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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)

Respuesta :

Solutions 

Associative Property is a rule that refers to grouping. The rule is "a + (b + c) = (a + b) + c". 

The correct answers are (A) and (D) 

(A) =  (11 + 2.2) + (–5) = 11 + [2.2 + (–5)] 

(D) = –7 + [4 + (–2.1 • 6)] = (–7 + 4) + (–2.1 • 6) 

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