Solve 7*b - 6*b = -2*n - 7, -3*n - 4*b - 23 = 0 for n.
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What is the o'th term of -106, -185, -266, -349, -434, -521?
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Solve -4*d - 49 = 5*r, -5*d + 3*r - 40 = -25 for d.
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Solve 0 = -4*i - 102*h + 99*h - 17, 0 = -i - 4*h - 1 for i.
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Solve 4*q - 15 = r - q, 3*r - 3*q - 3 = 0 for r.
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Solve 0 = -5*p, -2*f - 6 = -5*f - 5*p for f.
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Solve -3*c - 6 = 3*d, -4*d - 22 = -2*c - c for c.
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