Solve -s + 5*x = 21, -4*x - 1 + 9 = -3*s for s.

4

Solve 2*a = 3*g - 19, -2*a = -g + 9 - 4 for g.

7

Solve 0 = -2*s - 4*u - 8, 0*s = -2*s + u + 7 for s.

2

Solve 18 = 2*d + 4*p, 3*p - 45 = -2*d - 29 for d.

5

Solve 6*k + 15 = -l + 4*k, 5*k = -2*l - 35 for l.

-5

Solve -a + 5*a + 4*s - 40 = 0, -5*s + 35 = 2*a for a.

5

Solve -5*f = -5*u + u - 21, -5*u - 3*f = 17 for u.

-4

Solve 2 + 2 = 2*n - 2*o, -2*n + 9 = -3*o for n.

-3

Solve -3*x = -4*v - 13, v + 7 = 2*x - 5*x for x.

-1

Solve 4*o + q - 10 - 1 = 0, 5*o = -4*q for o.

4