Solve 0 = -y - 5*c - 15, 0 = -3*c + 6*c + 6 for y.

-5

Solve -h - 5*k = 18, -k - 2 - 2 = 0 for h.

2

Solve u - r - 19 + 12 = 0, 0 = 4*u - 2*r - 24 for u.

5

Solve 4*t - 5 = -3*w, 2*t = -0*t + 10 for w.

-5

Solve 3*s + 9 = -3*r, -5*r + 23*s - 36 = 21*s for r.

-6

Solve 5*l + 4*d + 6 = 20, d = l - 1 for l.

2

Solve 17 = -2*r - 5*u - 16, -2*u = 2*r + 18 for r.

-4

Solve 13*a + 7 = 12*a - 4*u, -17 = 4*a + 5*u for a.

-3

Solve 27*h - 25*h + 12 = -2*g, -2*h - 13 = 3*g for g.

-1

Solve 5*t - 4*i = -23, -7 - 15 = 4*t - 5*i for t.

-3