Solve l + 2*l = -3*h - 3, 3*l = 4*h - 17 for h.
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What is the a'th term of -23, -29, -35, -41, -47?
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What is the n'th term of -13, -29, -61, -115, -197, -313, -469?
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What is the d'th term of 103, 107, 111?
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What is the k'th term of 284, 325, 438, 659, 1024?
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What is the f'th term of 339, 680, 1019, 1356?
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What is the x'th term of 15, 24, 41, 72, 123?
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