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Answer :

Answer:

1). 8r + 7t

2). -48r² - 128rt + 20t²

3). 8r + 8t

NOTE: These are the most simplified form of each equation given, these might or might not me given in the answer choices, however these are correct.

Step-by-step explanation:

You just have to combine the similar values for each equation.

Hope this helps, good luck!

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