Solve 4 = -a + 2*a - 4*t, -4*t - 24 = 4*a for a.

-4

Solve 0 = -3*d + b + 11, 2*b + 8 - 10 = 0 for d.

4

Solve -2 = 2*b - f - 2*f, 0 = -b + 4*f - 11 for b.

5

Solve 4*k - 2*m + 12 = m, -15 = 5*k - 4*m for k.

-3

Solve 5*b - 4*z = -7, -11 - 1 = -3*b - 3*z for b.

1

Solve 4*o = -r, -2*o = 2*r + o for r.

0

Solve 0 = -2*u + 3*d - 14 - 2, 0 = -2*u - d - 8 for u.

-5

Solve -5*c = -2*b - 21, -9 - 18 = 4*b - 5*c for b.

-3

Solve -3*s + 12 = 0, -4*n - 5*s - 22 = -34 for n.

-2

Solve 7*v - 8*v - 10 = 2*b, -b = -4*v + 5 for v.

0