Solve -x - f - 1 = 0, 4*x + 3*f + 1 = -6 for x.

-4

Solve 3*a - 5*c + 6 = 0, -c + 5*c = 12 for a.

3

Solve 0 + 8 = 2*r + 4*p, -4*p = -4*r + 4 for r.

2

Solve 0 = -5*c - 0*c - 15, 5*c = 4*u - 31 for u.

4

Solve -2*x = 5*w - 33, -15 = w + 2*x - 7*x for w.

5

Solve 2*c = -u - 7, 3*u + 2 - 3 = 5*c for u.

-3

Solve 3*b = c - 10, 6 = 5*b + 3*c + c for b.

-2

Solve 0 = -2*o - m - 1, 5*m + 5 = -o + 3*o for o.

0

Solve -5*i + 4*k - 1 = 2*k, -2*k = -4*i for i.

-1

Solve -5*w + 4*w - 4*z + 6 = 0, -z - 5 = -3*w for w.

2