Solve 5*r = 2*b - 9 + 28, -15 = -5*b for r.

5

Solve -3*x - 16 = q - 0*q, -3*q + 12 = -3*x for x.

-5

Solve 4*x + 1 = u, 3*u + 2 = -x + 5 for u.

1

Solve -2*l + 10 = 0, 4*r - 3*l + 21 = -2*l for r.

-4

Solve p + 5 - 3 = 3*f, 0 = -p + 4 for f.

2

Solve 4*q = 3*v + 5 - 1, -26 = 4*v + 5*q for v.

-4

Solve 3*n - 24 = -3*p, -4*p + 4 = -2*n - 10 for n.

3

Solve -3*q - t - 11 = 0, 0 = q + 4*t - 11 - 0 for q.

-5

Solve 5*v + 50 = -5*s, -2*v + s - 13 + 8 = 0 for v.

-5

Solve a - 7 = -f, 2*a = 5*a - f - 13 for a.

5