Solve -x - 6 = 2*r - r, -4*x - 27 = 5*r for x.

-3

Solve -4*r = 5*n - 24, 0*r = -r - n + 5 for r.

1

Solve -2*c + 5*g - 4 + 27 = 0, c - 13 = 3*g for c.

4

Solve 2*t - 3 = -3*a - 0*t, 3*a + t = 0 for a.

-1

Solve 2*o + 4*r = 6*o + 12, 4*r = 3*o + 13 for o.

1

Solve -12 = 3*i, -2*s + 0*i = 5*i + 22 for s.

-1

Solve 4*u - 19 = -q, 19*q + 23 = 4*u + 16*q for u.

5

Solve 19*f = 5*v + 15*f - 29, -2*f = 2*v - 8 for v.

5

Solve -5*v - 10 = -5*n, n - 1 = -n + v for n.

-1

Solve 2*j + 16 = 2*w, j + w = -2*j - 12 for j.

-5