Solve -5*x - 21 = z, 5*z - 38*x + 40*x = -13 for z.

-1

Solve 0 = -8*v + 5*v - 2*w - 12, -4*w = -3*v + 6 for v.

-2

Solve -4*y = -c, 0 = -y + c - 2*c for y.

0

Solve 2*i = 2*s + 10, 33*i = 38*i + 3*s - 1 for i.

2

Solve -3*f - 6 = k - 3*k, 2*f + 4 = -k for k.

0

Solve -7*a = -x - 2, -x - 45*a + 46*a = 2 for x.

-2

Solve -3*q + 140*p = 142*p + 22, -19 = q + 3*p for q.

-4

Solve 4*c + 25 = -5*r, -4*c + 5 = -4*r + 3*r for c.

0

Solve -t = -2*c + 5, 15 = 295*t - 290*t - 2*c for t.

5

Solve -8 = 3*k + 4*z, -z = 2*k - 4*z - 6 for k.

0