Solve 2*k = 4*a + 20, 5*a + 0 = -5*k + 5 for a.

-3

Solve -3*u + 16 = 2*s - 0*s, s = 5*u - 18 for u.

4

Solve k - 32 = -30, s + 12 = 4*k for s.

-4

Solve -1 = -q + 4*a, 12*q - 4*a - 11 = 9*q for q.

5

Solve 5*o - 9 = 7*o - f, -4*f = -5*o - 30 for o.

-2

Solve 2*w + w + 5 = -z, 13 = 5*z - 4*w for z.

1

Solve -j = 2*d + 9, -16*j + 3*d + 14 = -17*j for j.

1

Solve 4*z = -5*u + 3*z - 5, 0 = -2*u + 2*z - 14 for u.

-2

Solve -5*b = f - 25, -f - 4*b - 5 + 26 = 0 for f.

5

Solve -4*u - 8 = -2*j - 6*u, 0 = j - 3*u for j.

3