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29 July, 05:09

Which has an identity

a. 8 - (5x 2) = - 5x - 6

b. 7z 10 - 2 = 8z - 2 (z - 5)

c. 8m - 4 = 5m 8 - m

d. 6y 5 = 6y - 5?

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Answers (1)
  1. 29 July, 06:53
    0
    7z + 10 - z = 8z - 2 (z - 5)

    6z + 10 = 8z - 2z + 10

    6z + 10 = 6z + 10

    0 = 0

    Therefore, option b has an identity.
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