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?

asked May 17, 2017 71.4k views

0 votes

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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6 votes

7z + 10 - z = 8z - 2(z - 5)
6z + 10 = 8z - 2z + 10
6z + 10 = 6z + 10
0 = 0

Therefore, option b has an identity.

Azzy Elvul answered May 24, 2017

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