Solve 2*v + 6 = -2*f + 7*f, -4*v - 12 = f for v.

-3

Solve 0 = -d - 1, 5*t + 3*d - 7*d + 21 = 0 for t.

-5

Solve 0 = 2*l - 4, -q = 106*l - 107*l + 5 for q.

-3

Solve -2*h = -w - 7*h - 8, w - 3*h = 0 for w.

-3

Solve 20 = 4*f - 3*r, -5*f - 17*r + 25 = -16*r for f.

5

Solve -3*h + 2*n = -1, 1 = 2*h + 4*n - 5*n for h.

1

Solve 0 = -m - t - 6, -m = -3*m - 5*t - 21 for m.

-3

Solve -16*z - 3*f - 12 = -19*z, -9 = -z + 2*f for z.

-1

Solve -2*c - 7*k + 10*k = -3, 2*c - 5*k = 1 for c.

3

Solve -2*d + 13 = -f, 5*f - 2*d + 21 = -12 for f.

-5