AmberAlexis AmberAlexis

25-05-2016
Mathematics

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Can someone please tell me if i am right?

Can someone please tell me if i am right class=

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2kilokaraj 2kilokaraj

25-05-2016

Second one is correct, that is an identity.

Third one is a contradiction:
6x - 15 = 3 * (2x - 6) ------> 6x - 15 = 6x - 18

Fourth one:
5x - 3 * (x - 4) = 2 * (x - 6) ---> 5x - 3x + 12 = 2x - 12 ---> 2x + 12 = 2x -12
So this is a contradiction as well.

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