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11 November, 09:35

Which of the following is true

a. 3.4 + 7.6 = 7.6 + 4.3

b. 3.14 + 0 = 0

c. (4.5 + c9.7) + 6.5 = 4.5 + (9.7 + 6.5

d. (1.1 + 10.9) - 7.5 = (10.9 - 1.1) + 7.5

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Answers (2)
  1. 11 November, 11:15
    0
    D. Because A. doesn't make sense B. Would equal 3.14 and C. The variable is not there
  2. 11 November, 12:55
    0
    the one that is true is c because addition is the only one other than multiplication that the numbers can be switched and still equal the same answer
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