Solve 0 = 2*a + 5*w - 15, -39*a + 5*w = -37*a - 5 for a.
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What is the z'th term of -472, -492, -524, -568, -624, -692, -772?
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What is the r'th term of 9, 104, 355, 840, 1637, 2824?
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What is the g'th term of 14, 32, 50?
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What is the y'th term of -642, -1285, -1930, -2577?
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What is the x'th term of 30, 27, 4, -51, -150, -305, -528?
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What is the m'th term of 757, 1529, 2313, 3115, 3941, 4797?
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