Solve -4*v = -u + 20, -113*v + 20 = 3*u - 115*v for u.
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What is the i'th term of 60, 105, 122, 105, 48, -55?
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What is the z'th term of 20, 16, 12, 8?
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What is the g'th term of 5, -8, -43, -112, -227, -400, -643, -968?
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What is the y'th term of 48, 203, 472, 861, 1376, 2023, 2808?
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What is the q'th term of 7, -5, -17, -29, -41, -53?
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What is the j'th term of 42, 29, 14, -3, -22?
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