Solve -2*h + 4*c + 20 = 0, -5*h + 10 = -7*c + 5*c for h.

0

Solve 4*p = -2*t - 12 + 8, p + t = 2 for p.

-4

Solve -26 + 33 = -h + 3*s, 4*h - 4*s = -20 for h.

-4

Solve 0 = 3*z - 2*z - 3*n - 17, 5*n + 15 = -z for z.

5

Solve -x + 10*d - 15*d = -11, 0 = 5*x + 4*d - 13 for x.

1

Solve 0*h = 3*v + h - 5, 5*v - 13 = 3*h for v.

2

Solve -5*k = 3*f + 11, -22*f + 18*f + 16 = -k for f.

3

Solve 3*a + 15 = 3*b, -2*a - 10 = -15*b + 18*b for a.

-5

Solve -2 = 4*m - 2*k, -5*k + 10 = m - 6*m for m.

1

Solve 5*z + 4*i + 35 + 1 = 0, 3*i + 20 = -2*z for z.

-4