Solve 0 = -k - 4*k - s + 25, 10 = 2*k + 3*s for k.

5

Solve 5*y + 4*m + 13 = -11, 4*y + 15 = m for y.

-4

Solve -3*v = -4*l, -5*l = -v - v + 7 for l.

-3

Solve -5*t + i - 2 = 0, 10 = 2*t + 3*t + 5*i for t.

0

Solve r + 15 = 4*r - 2*q, -20 = -4*r + q for r.

5

Solve -r + 5 = -5*v, -5*r = -4*v + 17 - 0 for r.

-5

Solve 4*c + 4*z - 28 = 0, 4*z + z + 5 = 5*c for c.

4

Solve 3*h + 30 = -5*r, -r - 28 = 3*h + 2*h for r.

-3

Solve 0 = c - 2*v + 48 - 35, 0 = -5*c + 2*v - 33 for c.

-5

Solve 0 = 2*z - t + 1, 3*t = -4*z + 39 - 16 for z.

2