Solve 5*i + 30 = 2*u, 4*i = 2*u + 5*i - 6 for u.

5

Solve 5*s - 21 = 5*c - 61, 0 = -4*c + s + 20 for c.

4

Solve -l - 5 = 3*v, -33 = 4*v - 4*l - 5 for v.

-3

Solve a - q + 35 = 31, 8 = -2*a + 5*q for a.

-4

Solve -10 = 3*w - 2*x, 5*w - 8*x = -9*x + 5 for w.

0

Solve 205*z - 210*z + 10 = 0, -3*k + 8 = -2*z for k.

4

Solve 5*p - 2*b = p + 16, 5*b = 4*p - 28 for p.

2

Solve 0*m = 3*m, -m - 15 = -3*u for u.

5

Solve 3*w + 4*v = 16, -4*w - v + 5 - 1 = 0 for w.

0

Solve -k = f + 10, 35 + 10 = -4*k - 5*f for k.

-5