Solve -4*d - n - 1 = -9*d, d - 9 = -2*n for d.

1

Solve 3*b + 3 = 0, -4*u = 4*b + 7 - 3 for u.

0

Solve 4*z - 17 = -5*k, 19 = 3*k - 2*z - 0*z for k.

5

Solve 7*x - 2*x = -c + 6, 0 = c - 1 for x.

1

Solve -2*o - 3 + 7 = -4*s, 0 = -2*o + 3*s + 1 for o.

-4

Solve 5*r + 18 = 2*r - 3*i, 2*i + 15 = -3*r for r.

-3

Solve -12*v + 8*v - 20 = 0, 5*v = -2*o - 21 for o.

2

Solve 4*h + 1 = -l + 2*l, -1 = -h - l for h.

0

Solve 4*c = 3*f - 2, 2*c = -3*f - 24 + 14 for f.

-2

Solve k + 5 = c, 0 = -5*c - k + 13 for c.

3