15 a2 - 1 = 5 2a - 2 Which equation results from cross-multiplying?

a.) 15 (a2 - 1) = 5 (2a - 2)

b.) 15 (2a - 2) = 5 (a2 - 1)

c.) 15 (a 2 - 1) (2 a - 2) = 5 (2 a - 2) (a 2 - 1)

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