Solve 12 = r + 5*s, -1 = -5*r + 4*s + 1 for r.

2

Solve 0 = -4*f - t + 1, -2*f = 4*t - 18 for f.

-1

Solve -19*r = 2*g - 18*r - 4, -3*r = -g - 5 for g.

1

Solve 0 = -3*b + 3, -2*m + 3*b - 11 = -0*b for m.

-4

Solve 2*a + 17*n - 2 = 15*n, -4*a = 3*n + 1 for a.

-4

Solve 0 = 4*y + 4*v + 32, 11*v + 13 = -5*y + 15*v for y.

-5

Solve 3*h - 3 = 3*v + 12, v + 8 = 2*h for v.

-2

Solve -3*s - 8 - 5 = -4*f, 4*f - 7 = s for s.

-3

Solve 0 = 3*m - 4*l - 8 + 11, 0 = 4*m + 4*l + 4 for m.

-1

Solve 2*h = 4*b - 10, 32*h - 34*h = -5*b + 10 for h.

-5