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31 August, 04:48

Which equation is an identity a; - 3y 3=-3y-6b; 3w 8-w=4w-2 (w-4) c; 9 - (2v 3) = - 2v-6d; 7m-5=8m 7-m?

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  1. 31 August, 05:17
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    3w + 8 - w = 4w - 2 (w - 4)

    2w + 8 = 4w - 2w + 8

    2w + 8 = 2w + 8

    0 = 0

    Therefore, option b is an identity.
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