Solve -2*w = -2*u, 2*u - 4*w - 13 = -7 for u.

-3

Solve 20 = 4*x, -13 - 12 = 4*c - x for c.

-5

Solve -5*n - 5*z = -10*z - 15, 4*n + 5*z = -6 for n.

1

Solve 5*r - r = 20, -5*r = -3*p - 10 for p.

5

Solve n - 2 + 17 = -5*v, -5*n - 35 = 5*v for n.

-5

Solve -5*c + 3*y + 19 = 0, -2*y = 20*c - 18*c + 2 for c.

2

Solve -2*z + 3*z = 0, -z = x for x.

0

Solve 32*k - 30*k = -4*j - 22, -3*j + k = 9 for j.

-4

Solve 4*b - 3*f - 2 = 0, 5*b + 4*f - 2*f = -9 for b.

-1

Solve -2*k + 7*k + 23 = g, g - 7 = k for g.

3