Solve 0 = -2*j + 4, -j = 5*s + 2*j - 21 for s.

3

Solve -27*j + 30*j = 2*t + 3, -3 = -t for j.

3

Solve 5 = -5*v, 4*r = 3*v + 42 - 23 for r.

4

Solve r + 4*u = -12, 5*r = 2*u + 11 + 17 for r.

4

Solve i = -5*j - 27, -2*j = -104*i + 106*i + 14 for j.

-5

Solve 5*n + 133 - 162 = -4*j, n = 5*j for j.

1

Solve -4*t + 1 = -4*z - 3, 1 = 5*t - 6*z for t.

5

Solve 0 = -2*h - c - 8, -5*c + 9 = -1 for h.

-5

Solve -3*b = -0*b + f - 13, -2*b + f = -12 for b.

5

Solve -4 = -9*q + 12*q + c, 4 = q + 3*c for q.

-2