Solve -19 = 10*u + 21, 0 = 4*s - 5*u - 20 for s.

0

Solve -r - x - 1 = 0, -3*x = 5*r - 7 + 14 for r.

-2

Solve 5*h - 3 + 29 = 3*t, 0 = 5*t - h - 14 for t.

2

Solve 2*f + 2*g - 7 - 11 = 0, g = -4*f + 24 for f.

5

Solve 5*c + 5*z = -0*c, c - 6 = 2*z for c.

2

Solve 1 = j, -3*o - j = -0*j + 11 for o.

-4

Solve -2*u = -2*h + 10, 4*u + 0*h + 17 = h for u.

-4

Solve 0 = -4*s - n - 11, 5*s + 0 = -2*n - 10 for s.

-4

Solve 2*u + 9 = -5*j, 5*j + 3*u + 2*u = 0 for j.

-3

Solve 3*n = -5*f + 4*n - 37, -3*n = -6 for f.

-7