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Sedbober [7]
1 year ago
9

18cn - 18a + 12d - 20d + 19d - 20cn - 5a + 20cn - 17a

Mathematics
1 answer:
Step2247 [10]1 year ago
5 0

Answer:

18cn-40a+11d

Step-by-step explanation:

The solution is in the image

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