Solve 0 = -5*d - 5*s + 15, -3*s = -4*d + 3 + 9 for d.

3

Solve -2*x - 2*d + 12 = 0, 2 = 7*d - 5*d for x.

5

Solve -4*c + 14 = 5*n - 3, c = -n + 4 for n.

1

Solve 2*u + 4*c = -14, -2*u - u + 2*c = 13 for u.

-5

Solve -7 = -4*w + 3*m, -2*w - 10*m - 29 = -5*m for w.

-2

Solve -4 = -4*x - 4*k - 0, -10 = 2*x - k for x.

-3

Solve -6*y + u = -y + 12, 0 = -5*y - 5*u for y.

-2

Solve -6 = r + 3*r - 2*s, 4*r = s - 9 for r.

-3

Solve -28 = 4*v + 4*w, -5*v - 1407*w + 1403*w - 31 = 0 for v.

-3

Solve -64 = 2*j + 4*p - 38, 5*p + 28 = -j for j.

-3