Solve 3*a + 2*j + 20 = 0, -4*j - 28 = 4*a - j for a.

-4

Solve 4*r = 8, 12 = 4*l - 2*r - 0 for l.

4

Solve -4 = 5*h - 4*u, -4*h - 7*u = -9*u + 8 for h.

-4

Solve h = 2*k + 9, 3*h + 2*h - 21 = 2*k for k.

-3

Solve 1 = -2*t + k, 2*t - 8 = 2*k + 2*k for t.

-2

Solve 3*m - 16 = b, 30 = 5*b - 2*m + 58 for b.

-4

Solve -4*b = 19*y - 17*y + 14, 0 = 3*y + 15 for b.

-1

Solve 0 = 4*z - 3*p + 24, -2 = 3*z - 5*z - 2*p for z.

-3

Solve 2 = -2*h + 4*k, 14*k - 16*k - 4 = -2*h for h.

5

Solve 4*p - 2*o = -8, p - 8 = 4*p - o for p.

-4