Solve -4*i = 4*y + 4, 2 = 4*i - 7*i - 4*y for i.
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What is the c'th term of -9, -30, -67, -120?
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What is the q'th term of -24, -61, -98, -135, -172, -209?
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What is the y'th term of 10, 15, 14, 7, -6, -25, -50?
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What is the u'th term of -76058, -76059, -76060, -76061?
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What is the d'th term of -1, -24, -55, -88, -117, -136, -139?
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What is the x'th term of 3, 15, 37, 69, 111?
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