Solve -4*o = -10*x + 62, -23*x + o = -21*x - 13 for x.
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What is the d'th term of -68, -305, -688, -1211, -1868?
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What is the i'th term of 15, 24, 39, 60, 87, 120, 159?
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What is the k'th term of -2719, -5438, -8157?
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What is the a'th term of -2, -11, -20, -29?
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What is the f'th term of 150, 302, 454, 606?
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What is the v'th term of -166, -678, -1534, -2740, -4302, -6226, -8518?
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