Solve 4 = 5*u + 2*b, 4*u + 69 = -b + 74 for u.
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What is the c'th term of -2881, -5788, -8721, -11692, -14713, -17796?
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What is the h'th term of 97, 163, 279, 451, 685?
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What is the w'th term of -212, -424, -636, -848?
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What is the w'th term of -199, -198, -205, -226, -267, -334?
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What is the w'th term of -514, -489, -446, -385?
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What is the r'th term of 1970, 3953, 5950, 7967, 10010?
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