Solve 0 = -4*i + 3*n - 21 - 5, 0 = 4*i - 4*n + 28 for i.

-5

Solve k = -5*n - 20, -4*k - 8 - 12 = 0 for n.

-3

Solve 3*r + 4 = -5*l - 16, -4*r - 21 = l for r.

-5

Solve -17*m - 5*q = -19*m - 17, -5 = 2*m - q for m.

-1

Solve -5*v = 5*l + 40, 17 = 2*v - 2*l + 13 for v.

-3

Solve 3*q - 4*r + 6 + 12 = 0, r + 7 = -5*q for q.

-2

Solve 4*c + 2*q - 12 = 0, 0 = -4*c + 2*q - q for c.

1

Solve -5*t + 3*m + 11 = -3, -5*t + 22 = m for t.

4

Solve 2*b - 3 = -c, -5*c + 10 + 5 = b for b.

0

Solve 0 = a + 5*m + 21, -5*a + 3*m = -35 - 0 for a.

4