Solve 0 = -2*f - k - 4, 0 = -2*f + 4*k - 6*k for f.

-4

Solve -5*v - 34 = -r - 6*r, 2*r = -v for r.

2

Solve -2*o - 2*o - 45 = -5*i, 0 = -o - 5*i + 20 for o.

-5

Solve 3*u + 2 = g, 3*u - 10 = -5*g + 5*u for g.

2

Solve 2*w - 18 = -5*r, 5*w + 26 = 3*r + 9 for r.

4

Solve -3*v + 6*v + 5*z = 14, 5*v = z - 14 for v.

-2

Solve 2*k - 3*i + 26 = 0, 4*k + 2*i + 2*i = 8 for k.

-4

Solve 0 = -5*h - 3*i + 40, -h + 20 = -4*i + 35 for h.

5

Solve -3*w - 3*v = 9, -5*w - 13*v = -12*v + 11 for w.

-2

Solve -15*d + 17*d - 18 = -4*s, 3*d = s - 1 for s.

4