Solve 5*n + 37 = -4*x, -18*n + 13*n = 25 for x.

-3

Solve -s + 3 - 6 = 5*k, 5*s = 5*k + 15 for s.

2

Solve 5*x = 3*a - 20, -2 = 5*a - 4*x - 31 for a.

5

Solve -39*t + 35*t - 8 = s, -2*s + 3*t = -6 for s.

0

Solve -2*c - j = 19, -41*c + 38*c - 2*j = 28 for c.

-10

Solve 2*r + c = -r + 9, -17 = -5*r - c for r.

4

Solve -4*g = 3*k - 6, 2*g - k = 6*g - 10 for g.

3

Solve -12 = -3*p - 4*f, 4*f = 2*p - 3*p + 12 for p.

0

Solve -5*t = a - 20, 0 + 4 = 5*a + t for a.

0

Solve -4*l + u = 20, -13*l = -16*l - u - 8 for l.

-4