Solve 6*r - r + 5*y - 50 = 0, -r = 2*y - 15 for r.
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What is the j'th term of -29, -63, -95, -125, -153?
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What is the f'th term of -113, -132, -151?
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What is the v'th term of -117, -237, -365, -501?
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What is the j'th term of 48, 286, 680, 1224, 1912?
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What is the t'th term of -437, -428, -407, -374?
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What is the r'th term of -5, -18, -17, -2, 27?
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