Solve 20 = 5*d, -5*d = -49*s + 48*s - 15 for s.

5

Solve -s + 3*n - 10 = 0, -2*s - 2*s + 2*n = 0 for s.

2

Solve -s = -3*b + 2, -13*s - b = -15*s - 9 for s.

-5

Solve 0 = -3*k - 9, -4*s + 3*k + 3 - 2 = 0 for s.

-2

Solve 4*d - 6 = -5*s, 5*s - 3*d - 14 + 36 = 0 for s.

-2

Solve -5*c + 40 = -r + 21, -2*c = 2*r + 2 for r.

-4

Solve -1 = -2*s + r, 2*r - 45 + 35 = -2*s for s.

2

Solve 4*g - 2*o = -6, g - 5*o + 30 = 6*g for g.

1

Solve f + t + 4*t + 23 = 0, -5*f + 2*t + 20 = 0 for f.

2

Solve 5*g = -5*r - 25, -6*g = -2*g + 2*r + 18 for g.

-4