Solve 3 = c + 3*s, -2*c = -2*s - s + 12 for c.

-3

Solve 20 = 2*z + 4*n - 0*n, 0 = 4*z - 2*n for z.

2

Solve -10 = -4*h + 6, -h - 21 = 5*j for j.

-5

Solve 0 = -t - 3*t - 5*k + 20, 5*t - 5*k - 70 = 0 for t.

10

Solve 3*f = 5*k + 4, k + 10*f - 14*f = 6 for k.

-2

Solve -4*x - l + 3 = 0, 2*x + 2*l - 7 = -1 for x.

0

Solve -3*r - 2*s - 13 = 0, s = -4*r - 0*s - 14 for r.

-3

Solve -2*n + 15 = -t, -n + 15 = -2*t - 0*n for t.

-5

Solve 0 = 2*z - p + 3, 5*z + 4*p = 1 + 11 for z.

0

Solve o = 3*o + 4*t + 4, 2*o + 4 = -2*t for o.

-2