Solve 3*b + 6 = -8*u + 7*u, -4*b - 9 = u for u.
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What is the q'th term of -26193, -26194, -26197, -26202, -26209, -26218, -26229?
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What is the r'th term of 0, -5, -36, -105, -224, -405?
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What is the m'th term of -3, -15, -35, -69, -123, -203, -315, -465?
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What is the a'th term of 7, 139, 359, 667, 1063, 1547?
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What is the m'th term of 58, 108, 168, 244, 342, 468?
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What is the b'th term of 1315, 2629, 3943, 5257, 6571?
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