Solve 0 = c + 2*o + 5, 4*o - 3 + 6 = 5*c for c.

-1

Solve 16 = 2*v + 4*t, -3*t = -2*v - v + 6 for v.

4

Solve 2*t + 13 = 3*f, -2*t - 5*f = 2*t - 29 for t.

1

Solve -t - 20 = 3*f, t - 2*f - 2 = 3 for t.

-5

Solve t - 4*x - 16 = 0, -5*t - 4*x = -5*x - 23 for t.

4

Solve -4*r = -2*r - 4, -4*r - 57 = 13*k for k.

-5

Solve 4*z - f - f = -2, -z = 4*f - 22 for z.

2

Solve -5*k + 2*r = 30, 0 = -5*k + 7*r - 4*r - 30 for k.

-6

Solve -5*c - u = -24, -2*c + 9 = 8*u - 7*u for c.

5

Solve 5*d - 5*q + 15 = 0, 2*q = 8*d - 3*d + 12 for d.

-2