Solve -v - 7 = -4*f, 7*f - 3*v = 5*f + 1 for f.

2

Solve 4*d - d - 13 = -5*y, -d + 3*y = 5 for d.

1

Solve -2*h = -p + 1, -2*p = 3*h - p - 1 for h.

0

Solve -4*t = p + 4, -2*p = -3*t - t - 16 for p.

4

Solve -5*n + 10 - 21 = 4*h, -2 = -2*h for n.

-3

Solve -12*p - k + 45 = -4*p, 4*p - 12 = -4*k for p.

6

Solve 3*b = -3, g - 6 = 2*g + 2*b for g.

-4

Solve -27*q - 3*v - 4 = -31*q, 0 = q - 3*v - 1 for q.

1

Solve -6*l - 2 = -5*l - 2*r, 2*l - 5*r + 4 = 0 for l.

-2

Solve 28 = -5*r + 2*t, 0 = -2*r - 3*t - 0*t + 4 for r.

-4