Solve -5*z = -4*u - 9, -4*z + 7 = -4*u + 3 for z.

5

Solve -w + 4*z = 17, 5*w + 166*z = 169*z for w.

3

Solve 3*f + 3*x - 34 = -10, 3*f - 28 = -4*x for f.

4

Solve 2*y + 3*i = -1, -2 = -21*y + 22*y + 2*i for y.

4

Solve 7*d - 26 = 5*d - 4*u, 0 = -5*d + 2*u + 5 for d.

3

Solve 0 = -3*w - 6*z + 4*z - 12, 5*z + 19 = -2*w for w.

-2

Solve 0 = 3*r - r + 3*x - 12, 2*r - 14 = -4*x for r.

3

Solve -3*c + 102 = -2*r + 97, 2*c = -5*r - 3 for r.

-1

Solve -s + r = -5*s - 13, 2*r = -5*s - 14 for s.

-4

Solve -22*t - 5*d + 20 = -27*t, 4*d - 2 = -3*t for t.

-2