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In an arithmetic sequence:
3k-11-(k+2)=k+2-(5k-3) \\ 2k-13=-4k+5 \\ 6k=18 \\ k=3
14 3 14
how did you get that?
In an arithmetic sequence, the difference between two consecutive terms is the same so the given terms must satisfy that as well, so when we subtract the first term from the second, we must have the same difference when we subtract the second term from the third.
thanks for these .