Solve 2*v + 2*v = -f, -3*f - v - 11 = 0 for f.
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What is the j'th term of 1, -5, -11?
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What is the i'th term of -126, -137, -148?
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What is the s'th term of 18, 23, 30, 39?
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What is the w'th term of -147, -283, -425, -579, -751, -947, -1173?
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What is the u'th term of 2626, 10432, 23434, 41626, 65002, 93556, 127282?
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What is the n'th term of -28, -29, -30?
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